Hubble Asteroid Hunter III. Physical properties of newly found asteroids
Fun Puzzles and Riddles with Answers
1. The answer for each puzzle is in the notes section of
each slide. You may need to scroll down. Pictures are
include on most slides. Some will help, others will
lead you astray!
*
Each puzzle has a
point rating 1-10
with 10 being the
most difficult.
2. If you know the answer already,
don’t spoil it!
3. The puzzles are in 3 sections:
general, maths and longer lateral
thinking puzzles.
General
Maths
Lateral thinking
4. A brown house is made with brown bricks, a
white house is made with white bricks.
What is a green house made of?
1 point
5. You go on holiday to Norway. When you arrive at
your cabin, you find that there is no heat or
electricity. However there is wood in the
fireplace, a wood-burning stove, a candle and an
oil lamp. You search through your pack and find
you only have one match. What should you light
first?
2 points
6. What occurs once in a minute, once in a second,
once in a month and once in a century but not at
all in a year, an hour or a week?
1 point
7. Why won’t a starving eskimo eat a penguin egg?
2 points
8. Sam is a bus driver. He drove 10 miles to the bus
depot. He then drove 10 miles with an average of
16 passengers before driving 10 miles to the
garage where the bus was serviced. The
mileometer on the bus showed that 20 miles had
been driven that day. Explain.
2 points
9. Mrs Penworthy’s bungalow is decorated
completely with her favourite colour – purple.
She has purple walls, purple furniture and purple
carpets. Why does she not have purple stairs?
1 point
10. Six buckets are placed in a row. The first 3 are full
of water and the other 3 are empty. By moving
only one bucket, how can you get an arrangement
where it goes full, empty, full, empty, full, empty?
1 2 3 4 5 6
2 points
11. What 5 letter word has 1 consonant followed by 4
vowels? If you remove the vowels, the sound is
not altered.
5 points
12. Where can I put my right hand where I can’t put
my left hand?
1 point
13. You are driving a bus. At the start of your
journey, there are 6 people on the bus: Fred,
Bert, Sam, Jane, Bertha and Orla. At the first
stop, Fred and Bert get off while Susan and John
get on. At the second stop Bertha gets off and
Callum gets on. At the last stop everyone gets
off. What is the name of the bus driver?
2 points
14. What 5 letter word becomes shorter when you
add 2 letters to it?
3 points
15. The caretaker is raking leaves in the playgrounds.
In the front playground, there are 7 piles of
leaves and in the back playground, there are 3
piles of leaves. How many piles will he have when
he puts them all together?
1 point
16. A village has 2 men who cut hair: Bert who is the
only barber in “Hair today, gone tomorrow” and
Fred who is the only barber in “Hair Peace.”
Fred’s hair is well cut whilst Bert looks like he has
had a fight with a lawnmower. Who would you
choose to cut your hair? Why?
3 points
17. A man flew from London to Chicago on
Tuesday. He stayed for 2 days and then flew
back to London on Tuesday. Explain.
4 points
18. Who played for both England and Germany at
Wembley on the same day?
5 points
19. The first copy of this book was published in 1878
in America. Since then it has been reprinted many
times. American copies of this book are
completely different from British ones. Branches
of WH Smiths will have this book but won’t sell it
to you and libraries will have a copy but won’t
lend it to you. There is probably a copy in your
home. What is the book?
5 points
20. England are leading Germany 4-1 in an
international football match at Wembley.
88 minutes of the match have been played but
not one man on either side has scored a goal.
4 points
21. A woman has 2 sons born within 5 minutes of
each other. They appear to be identical but they
are not twins.
5 points
22. A man has a fox, a hen and a bag of corn. He
needs to take all 3 across the river. The boat will
take him and one of them. He cannot leave the
fox and the hen together or the hen and corn
together. How does he get all 3 across uneaten?
4 points
23. A plane travelling from England to Germany
crashes mid-way in France. Where would the
survivors be buried?
3 points
25. Mr Smith and Mr Jones are next door neighbours.
Mr Smith has a beautiful peacock. He told Mr
Jones that if the peacock laid an egg in Mr
Jones’ garden, the egg would still belong to him.
Mr Jones disagreed saying that if it laid an egg in
his garden it would be his. Who is right?
4 points
27. 2 points
Bert’s father is Professor Maths. He has 4
children. 3 of them are called Add,
Subtract and Divide. What is the fourth
child called?
28. Rearrange the letters of NEW DOOR to make one
word. You are not allowed to leave any letters
out or put in any extra letters.
n
r
o
o
d
w
e
4 points
29. There was a boy who was 12 years old in 2002. In
2012 he was 2 years old. Explain.
7 points
30. Jessica was born on 20th December 2001. She
says that this year her birthday will be in the
summer. Explain.
3 points
31. You are at a junction. One road leads to the
town you want to go to, the other leads to a
marsh. There are no signs. However, there are
two men: one who always tells the truth and the
other who always lies. You are allowed to ask
one of them one question to find the way to go.
You do not know which man is which. What do
you ask?
7 points
32. A family has 2 parents, 3 daughters and each
daughter has 4 brothers. How many in the family?
3 points
33. What 7 letter word do most people pronounce
wrongly.
2 points
34. 5 men are going to church together. It starts
raining. 4 of them get wet. The 5th man, who
does not have an umbrella, and was less than 1m
from the other 4 remained completely dry.
Explain.
6 points
35. Rats can breed very quickly. Joe starts with 2
rats and finds that 6 months he ends up with 40
rats. How many rats would he end up with after
6 months if he started with 1 rat?
3 points
36. Joe has 4 white rabbits, 6 brown rabbits and 5
black rabbits. How many rabbits could say that
they are the same colour as another of Joe’s
rabbits?
4 points
37. There were two mothers and two daughters in a
train carriage. The train stopped and one of
them got out. Two people remained. Explain.
3 points
38. 2 men played chess for 9 hours. They played 5
games. Each man won the same number of
games. No games were drawn or abandoned.
Explain.
5 points
39. How can you take I away from I9 and get 20?
8 points
40. The Roman numeral for 9 is IX. Add one
character to this to make it an even number.
8 points
41. New Year’s Day is 7 days after Christmas Day.
You would think that they would be on the same
day of the week. However in 2009, Christmas
Day was on Friday whereas New Year’s Day was
on Thursday. Explain.
7 points
43. Read this out loud:
11 was a racehorse
12 was 12
111 a race
12112
7 points
44. Fred the postman has a round which takes him
1¾ hours. On Friday he takes 105 minutes.
Explain.
2 points
45. You have 9 red balls which appear to be
identical. One ball is slightly lighter than the
others. Using the scales below twice only, how
could identify the lighter ball?
6 points
46. There is a room with 3 light bulbs in it. Each
bulb is controlled by one switch. The switches
are down a corridor away from the room. You
are allowed to go to the switches ONE time and
then to the room with the bulbs to work out
which switch controls which bulb. You are on
your own and have no mirrors!
9 points
51. What is usually filled in the morning and emptied
at night except at Christmas when it is filled at
night and emptied in the morning?
3 points
52. What do you find in the middle of Derby that
you don’t find at all in Sheffield or Nottingham?
5 points
53. Alison works at the greengrocer’s. When she was
born, she weighed 3kg and measured 30cm. She
is now 20 years old and is 150cm tall. What does
she weigh now?
7 points
54. In a drawer there are 5 pairs of pink socks and 4
pairs of blue socks. The socks are loose. What is
the largest number of socks you need to take
out of the drawer in order to be sure of getting
a matching pair?
3 points
55. If you travel 6 miles south, followed by 4 miles
north, what is the furthest distance you can be
from your starting point?
8 points
56. In which sport do all the contestants except one
on each team move backwards?
7 points
57. As I was going to St Ives, I met a man with 7
wives. Each wife had 7 sacks, each sack had 7
cats, each cat had 7 kittens. Kittens, cats, sacks
and wives, how many were there going to St
Ives?
4 points
58. Connor comes into school and tells his teacher
that his mother is the same age as his granny
and that they are both 50 years old today. How
can this be?
5 points
62. Sam was in big trouble with his Dad. He was told
to say something. If what he said was true, he
would have no pocket money for a year. If he
lied, he would be banned from TV for 2 months.
What can he say to avoid any consequences?
9 points
63. Sam is in trouble at school. In front of the class,
Sam’s teacher Mrs Smegly tells him to pick one
of two pieces of paper from a box. According to
her, one piece has “lunchtime detentions for 2
months” while the other one has “another
chance.” However Sam knows that Mrs Smegly
always writes the detention consequence on
both pieces of paper. What can he do to escape
detention?
9 points
64. By moving one match stick only, can you turn
this arrangement into a shop?
Answer on next slide.
10 points
65.
66. A man is dozing during a church service. He is
dreaming about the French revolution and the
guillotine. His wife, seeing that he is nodding off
taps him on the back of the neck. He has a heart
attack and dies instantly. True or false? Give a
reason.
7 points
67. The next 3 puzzles work only if read, not viewed
68. What game has 4 letters, starts with a tee and is
played all over the world?
7 points
69. There are 20 fore heads in a boat 50 miles off
land. The boat sinks and the lifeboat rescues 20
people. Nobody drowns and no other boat
rescues anyone. Explain.
7 points
72. A new hotel has 100 rooms. The decorator needs
to put numbers on all the doors. How many
number 1’s does he need to buy?
3 points
73. A certain type of seaweed doubles in length
every year. After 6 years it is 12m long. How long
would it have been after 5 years?
3 points
74. You have a 5 litre bottle and a 7 litre bottle. You
have a tap and a sink. How can you measure 1
litre. You can pour from one bottle to another,
refill and pour away as much as you need to. The
bottles do not have a regular shape.
5l 7l
9 points
75. A man goes into B & Q to buy something for his
house. He is told that 1 costs 80p whereas 5
costs £1.20. His total bill is £3.20. What does he
buy?
9 points
76. Stephanie runs a clothing shop. She sells shorts
for £36, trousers for £48 and a hat for £18. What
would she charge for boots?
£36
£48 £18
£?
10 points
77. On average 25 acorns grow on a branch. Here is
a chart showing how many branches trees have
at different ages.
How many acorns would you find on a 40 year
old sycamore tree?
Age Branches
10 5
20 10
30 15
40
50 25
60 30
5 points
78. A snail is at the bottom of a 30m well. Every day
it crawls up 3m before slipping back 2m every
night. How many days will it take it to escape
from the well?
8 points
79. Mr Green is giving out sweets to the Stars of the
Week in Blogly Primary School. He gives 5 sweets
to infants and 6 sweets to juniors. Altogether he
gives out 56 sweets to 10 children. How many
infants and juniors make up the 10?
6 points
80. A 100kg sack of potatoes is 99% water and 1%
potato stuff. It is allowed to dry out until it is
98% water and 2% potato stuff. How heavy is the
sack of potatoes now?
10 points
81. A ship is at anchor in a harbour. At low tide, the
water is 2.6m below the deck. Over the next 6
hours, the tide rises by 1.5m. How far from the
deck will the water be now?
4 points
82. A man has 10 sons. To the first son, he gives
10 oranges, the second son 20, third son 30
etc. His 10th son has 100 oranges. Each son
goes out and sells the oranges to one
customer. They use the same pricing policy
and they each bring back the father £2. What
was the pricing policy?
10 points
83. Add one character to make this equation
correct.
I0 I0 I0 = 9.50
9 points
84. Bert and Fred have the same amount of money.
How much does Bert need to give Fred so that
Fred has £10 more than Bert?
4 points
85. A bottle of perfume costs £20. The whisky is
worth £19 more than the bottle. How much is
the bottle worth?
5 points
86. The occupants of Bagley Close live in houses
numbered 1-19. Each occupant has an 8 digit
telephone number starting with 1 which is a
multiple of their house number. What are the
telephone numbers? Use a calculator.
Clue on the
next slide. (Lose
3 points if you
use it!)
10 points
87. You need to find the 8 digit number which starts
with 1 and is divisible by numbers 1-19. By
adding 1, 2, 3, 4 etc onto this number, you will
get the phone numbers.
Think prime numbers.
7 points
88. If Fred gives one marble to Bert, they will have
the same number. If Bert gives one marble to
Fred, Bert will have half the amount of marbles
Fred has. How many marbles do they each have?
4 points
89. A box of chocolates costs £2 plus half its price.
How much does it cost?
5 points
90. Two friends are playing cards for 5p a game. At
the end Joe has won 3 games and Ben is 30p up.
How many games did they play altogether?
7 points
91. Bill and Bertha start a romantic meal by lighting
2 candles. They are both the same thickness but
different lengths. One will burn for 7 hours and
the other for 5 hours. At the end of the meal,
they blow out the candles and find that one
candle is twice the length of the other. How long
was the meal?
5 points
92. A builder dug a hole 5m long, 3m wide and 2m
deep. Hoping to improve his daughter’s Maths
skills, he asked her, How many m³ of soil in the
are the hole?
4 points
93. I have 9 sweets in a bag. I give 3 to Mark, 3 to
Rebekah and 3 to India. At the end, there are
still 3 sweets in the bag. Explain.
4 points
94. 3 workers each get paid depending on how many
hours they have worked. The plumber worked
for 3 times a long as the painter and the painter
worked 5 times as long as the electrician. The
total wage bill was £630. How much was each
man paid?
5 points
95. *
*These next few puzzles cannot
usually be solved by a quick
flash of inspiration. Children
need to ask yes/no questions
over a longer period of time to
build up enough information to
enable the Eureka moment!
96. 3 pieces of coal are lying on the grass in a
garden in early Spring. How did they get there?
9 points
97. A man walks into a pub and asks for a glass of
water. The barman pulls a gun on him. They
shake hands and the customer walks out
satisfied.
8 points
98. A man walks into a bar and falls immediately
falls down unconscious.
8 points
99. A man lives on the 16th floor of a block of flats.
Every day he takes the lift from down to the
ground floor and then goes to work. On his way
back from work, he takes the lift to the 5th floor
and then walks the rest of the way. If it is raining
in the morning, on his return, he takes the lift to
the 11th floor before walking the rest of the way.
8 points
100. A father and his son are travelling in a car. The
car crashes and the father is killed. The boy is
taken to hospital and needs an operation. The
surgeon comes into the operating theatre, looks
at the boy and says, “I can’t operate, he’s my
son.”
6 points
101. Romeo and Juliet are lying side by side on the
floor. Beside them is some water and broken
glass. The window is open.
9 points
102. A man went into a field with a pack on his back
and died.
9 points
103. A man is hanging 3m from a beam in a barn.
Underneath him is a pool of water. Outside is a
tractor. He is dead.
9 points
104. While the soup simmered, Johnny missed his
train.
10 points
105. A man who is broke, is parked outside a hotel.
9 points
106. A man is lying in a telephone box. He has
injured his hands. The phone is off the hook.
Outside is a fishing rod.
10 points
107. Two men are rescued from a desert island. In
port one of them goes straight into a
restaurant. He orders a bowl of Albatross
Soup. He takes one sip of the soup and then
returns to the boat and shoots the other man
rescued from the desert island.
8 points
Editor's Notes
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
glass
The match
The letter n
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
Sam drove the 10 miles to the depot in his own car.
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
Bungalows don’t have stairs.
Pick up bucket 2 and empty it into bucket 5 before replacing it.
queue
On my left elbow.
Your name
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
Short + er = shorter
one
Bert because he will have cut Fred’s hair and made a good job of it.
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
The plane is called Tuesday.
The band.
Telephone directory
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
It is a women’s international match.
They are 2 or a triplet.
Take the hen across first
Return and put either the fox or the corn in the boat.
Take the hen back to the starting point and leave it there.
Take fox or corn over.
Return to get hen and take over again.
Survivors aren’t buried.
Venus
Neither. Peacocks don’t lay eggs. Peahens do.
A blackboard.
Bert
A blackboard.
One word
The dates are both BC not AD
Jessica will be in Australia (or another southern hemisphere country)
Which direction would the other man say is the way to the town? Then take the opposite from the reply.
9
wronglyh
The 4 men were carrying the 5th man in a coffin to church for his funeral.
Eskimos live in the North towards the Arctic whereas penguins live in the South in the Antarctic region.
1
None, rabbits can’t talk.
There were 3 women: a grandmother, a mother and her daughter. Two of the three are mothers and 2 of the 3 are daughters.
A blackboard.
The 2 men were playing different opponents.
Roman numerals: - XIX = 19
Take the I away and you get XX =20
S in front -- six
The New Year’s Day of the following year (the new year) is the same day as Christmas always. But New Year’s Day and Christmas Day in the same year are not on the same day of the week.
Too wise you are, too wise you be. I see you are too wise for me.
One One was a racehorse
One Two was one too
One One won a race
One Two won one too.
There is no difference 105 minutes = 1¾ hours
Split the balls into groups of 3. Put two groups on either side of the scales. If one side goes up, that 3 contains the lighter ball. If they balance, the group of 3 not on the scales has the lighter ball.
Take the group of 3 with the lighter ball and put 2 of the balls on the scales. If one side goes up, that is the lighter ball. If they balance, the ball not on the scales is the lighter ball.
Turn the first switch on and leave it on. Turn the second switch on for 2 minutes. Don’t touch the third switch.
Go to the light bulbs. There should be one that is on – that is controlled by the first switch. Feel the other 2 bulbs, the one that is warm is controlled by the second switch (having been on for 2 minutes). The remaining cold bulb is controlled by the third switch.
Your age.
Time
An armchair.
A watch
A sock
The lettter r
Fruit and vedge
3
10 miles – if you start 6 miles south of the South Pole. When you get there, every direction is North.
rowing
1 – all the rest were going in the opposite direction.
His granny is his Father’s mother.
My Dad
I is the 9th letter of the alphabet.
When the months are arranged alphabetically.
I will be banned from TV for 2 months
Take one piece of paper and eat it. Then suggest that the way to find out what it said is to look at the remaining one – which says detention. So Sam says, “The one I picked must have said “another chance”!”
Answer on next slide
False. If he died instantly, he would’t be able to tell them about his dream.
Method 1
Fill 5l
Empty 5l into 7l
Refill 5l
Pour as much as you can from the 5l into the 7l (2l leaving 3l in 5l0
Empty 7l
Pour 3l from 5l to 7l
Refill 5l
Pour as much as you can from the 5l into the 7l (4l)
1l remains in the 5l bottle.
Method 2
Fill 7l
Fill 5l from 7l (leaving 2l in 7l)
Empty 5l
Pour 2l from 7l to 5l
Refill 7l
Pour as much as you can from 7l to 5l (3l leaving 4l in 7l)
Empty 5l
Pour 4 litres from 7l to 5l
Refill 7l
Pour as much as you can from 7l to 5l (1l leaving 6l in 7l bottle)
Empty 5l bottle
Fill up 5l bottle from 7l bottle (5l poured in leaving 1l in 7l bottle.
Numbers for his house ( 2 x 1.20 + 1 x 0.80 = 3.20) His house number is 155.
£30 - it’s £6 per letter of the item.
None sycamore trees don’t have acorns.
28 days. On the 28th day it reaches the top and doesn’t slip back.
4 infants and 6 juniors (4 x 5 + 6 x 6 =56)
50 kg The 1kg of potato stuff doesn’t dry at all. So for 1kg to be 2%, you need a total weight of 50kg.
2.6m – the boat rises with the tide.
Buy all the oranges – it’s 20p for 11 and then 20p for every single orange not in an 11. eg 60 oranges – 5 x 11 = 55 (5 x 20p = £1) leaving 5 single oranges at 20p each (5 x 20p = £1) (Total = £1 + £1 = £2)
IO TO IO = 9.50 (Ten to ten = nine fifty) Time
£5
50p
2 x 3 x 5 X 7 X 11 X 13 X 17 X 19=9699690 This has only 7 digits and does not begin with 1. However if you multiply this by 2, you get 19399380. This is the starting number.
Fred has 7; Bert has 5
£4
9 games. Ben has to win 6 to make up for the 3 he lost and make 30p in winnings.
3hrs leaving the candles with 4 & 2 hours burning left.
0 – the soil had all been dug out.
I gave India her sweets in a bag.
Electrician £30 Painter £150 Plumber £450
They fell off a snowman as it melted.
He had hiccups and the shock cured him.
He walked into an iron bar and was knocked out.
The man is a midget. He cannot reach the button for the 16th floor. If it is raining, he takes his umbrella and can reach the button for the 11th floor.
The surgeon is the boy’s mother.
Romeo and Juliet are goldfish. The cat has come in the window and knocked over the bowl.
His parachute did not open.
Suicide. He used the tractor to pull a block of ice into the barn then used it to climb up and put the noose round his neck. Later the ice melted.
The soup simmering on the fire prevented Santa from coming down the chimney and delivering Johnny’s train.
In a game of Monopoly a player has landed on a property with a hotel on it and is broke.
In describing “the one that got away” the fisherman stretched out his hands and injured them on the side of the phone box.
While on the island, the man who eventually got shot served up what he said was albatross soup. It wasn’t – it was human soup. The man who went to the restaurant realised that the taste was different.
In describing “the one that got away” the fisherman stretched out his hands and injured them on the side of the phone box.