2. PREFACE
This book on is formulated with an objective to benefit all the aspirants who plan to appear for JET
Exams and Other Competitive exam The language in the book is kept Very simple Purposefully, so that
every student can easily understand the techniques of problem solving in just one reading more than
1200 problems on different topics.
it most of the existing books which are in circulation in market the Sequence of problems in the
exercise is haphazard, but in this book exercises problems are starting with easy levels.
Writer
Pr. P.Sharma
3. Contents
1. Logical Reasoning 04 -13
2. Syllogism 14-21
3. Input Output 22-31
4. Data Sufficiency 32-45
5. Fill in the blanks 46-61
6. Para jumbles 62-79
7. Miscellaneous 80-97
8. Simplification 97-109
9. Ratio & Proportion, Percentage 110-121
10. Number Systems 122-135
11. Profit & Loss 136-148
12. Mixtures & Alligations 149-162
13. Work & Time 163-179
14. Time & Distance 180-201
15. Mensuration – Cylinder, Cone, Sphere 202-219
16. Sequence & Series 220-238
17. Permutation, Combination & Probability 239-250
18. Data Interpretation 251-269
19. Paragraph Complete/ Sentence Correction 270-287
20. Reading Comprehension 289-299
4. Aptitude (JET Exam)
1. The average age of 20 students in a class is 20. When the age of their class teacher commuted with the
total age of students, their average age, including the class teacher's raises to 21. If so, what is the age of
the class teacher ?
(a) 40
(b) 36
(c) 41 (Ans)
(d) 44
Answer : Total age of 20 students = 20 * 20 = 400.
After inclusion of teacher, total age = 21 [No of members] * 21 [New average age] = 441.
Age of new entrant [teacher] = 441 - 400 = 41
2. Rajan travels from Kannur to Kozhikode by a car at speed of 60 Km/hour and returns back by hiring a
gipsy at a speed of 50 Km/ hour. Then what will be the average speed of his vehicles through out their to
and fro journey. ?
(a) 54-6/11 km/hour (Ans)
(b) 57 km/hour
(c) 55-6/11 Km/hour
(d) 54-5/11 Km/hour
Answer : If 'a' & 'b' are the speed in to and fro journey of vehicles By short method formula to arrive
average speed = 2ab/a+b
ie, 2*60*50 /60+50 = 6000/110 = 54-6/11
3. Mr. X complete a piece of work with in 8 hours and whereas Mr. Y complete the same piece of work in 6
hours. If both Mr. X & Y operate the same work jointly, in how may hours they complete the same work ?
(a) 7/14 Hrs
(b) 24/7 Hrs (Ans)
5. (c) 5 hours
(d) Not given
Answer : If 'x' and 'y' be the number of days required individually by two persons, then by Short method
formula, the number of days required to complete the same work by joining them is
= xy = 6*8 = 48
x+y 6+8 14
= 24/7 [If three persons worked the short method formula becomes as xyz .]
xy + xz + zx
4. Raman & Krishnan will complete a job in 6 days and 12 days respectively according to their capacity.
Govindan will complete the same of piece of work in a single day that which Raman & Krishnan both do in
a single day. If Krishnan and Govindan wishes to complete the same work, in how many days they take to
finish the work
(a) 5 days
(b) 3 days (Ans)
(c) 4 days
(d) 4.5 days
Answer : Here Raman and Krishnan do the work in 6*12 days ie 72 ie in 4 days
6+12 18
It is stated that the job of Raman & Krishnan in one day is equals to Govindan's one day work. Otherwise it
means that Govindan complete the assigned work in 4 days. If Krishnan & Govindan work jointly, the work
will be completed in
12*4 = 48 = 3 days
12+4 16
5. A train running in 90Km/hour, having 100 metres long, crosses a train running in another track in
opposite direction with speed of 54 Km per hours having 140 metres. How many seconds will take the
trains to cross each other fully ?
(a) 9 seconds
(b) 6 seconds (Ans)
6. (c) 8 seconds
(d) No given
Answer : Here we want to calculate the relative speed or velocity. Since the trains are moving in opposite
directions the relative speed will arrive by summing up i.e. 90 Km hr + 54 Km/hr = ie. 144 Km/hour = 40
m/secs [to convert Km/hour to metres/seconds we want to multiply the term by 5/18.]
The total distance of crossing, [i.e. length of two trains] = 100m + 140m = 240m
The time required to cross 240m by 40m/secs speed = 240/40 = 6 seconds [Conversion of metres/seconds
to KM/seconds will be arrived by multiplying by 18/5.]
7. Reasoning Ability (JET Exam)
1. How many such pairs of letters are there in the word TRIBUNAL each of which has as many letters
between them in the word as in the English alphabet?
a) None
b) One
c) Two
d) Three
e) More than three
2. In a certain code DOWN as ‘5@9#’ and NAME is written as ‘#6%3’. How is MODE written in that code?
a) %653
b) %@63
c) %5@3
d) %@53
e) None of these
3. How many meaningful English words can be formed with the letters LGEU using each letter only once
in each word?
a) None
b) One
c) Two
d) Three
e) More than three
4. In a certaincode THRIVES is written as SIUHRDU. How is SOULFUL written in that code?
a) VPTKKTE
b) VPTKETK
c) TPVKKTE
d) TNRKMVG
e) None of these
5. The positions of how many digits in the number 59164823 will remain unchanged after the digits are
rearranged in descendign order within the number?
a) None
b) One
c) Two
d) Three
e) More than three
8. 6. Mohan walked 30 metres towards South, took a left turn and walked 15 metres. He then took a right
turn and walked 20 metres. He again took a right turn and walked 15 metres. How far is he from the
starting point?
a) 95 metres
b) 50 metres
c) 70 metres
d) Can’t be determined
e) None of these
7. What should come next in the following letter series?
PQRSTABCDEPQRSABCDEPQRSABCDPQ
a) R
b) T
c) A
d) B
e) None of these
8. In a certain code language, ‘how can you go’ is written as ‘ja da ka pa’. ‘can you come here’ is written
as ‘na ka sa ja’ and ‘come and go’ is written as ‘ra pa sa’. How is ‘here’ written in that code language?
a) ja
b) na
c) pa
d) Data inadequate
e) None of these
9. What should come next in the following letter series based on English alphabet?
CEA IKG OQM ?
a) STW
b) WUS
c) SWU
d) UWS
e) None of these
9. English Language (JET Exam)
Directions (Q. 1-10) Read the following passage carefully and answer the questions given below it.
Certain words have been printed in bold to help you to locate them while answering some of the
questions.
Once a thief named Kalu had planned to loot the king's treasury. At midnight, he went to the palace and
began to drill a hole in the side wall of the treasury. The king, who was awake in his bedroom just above
the treasury, came out to investigate the whirring sound. He was dressed in a simple nightgown and the
thief could not recognize him. He asked Kalu who he was and what he was doing. The latter said, "Sir, I
am a thief and intend to loot this treasury. I presume that you are also a thief and have come with the
same intentin. No matter, let us both go inside and we shall share the loot equally. "Both entered the
treasury and divided all the money and the jewels equally between them.
Inside a locker they found three big diamond pieces. As the thief was puzzled as to how to divide the
three pieces into two portions, the king siggested. "We have taken away everything else. Let us leave
one diamond piece for the poor king and share the rest equally". Kalu agreed and when he took his
leave, the king asked for his name and address. As Kalu had taken a vow of telling only the truth, he h
ave the correct information.
The king took away his share of the loot and hid it in his room. Next morning he asked his Prime Minister
to inspect the treasury as he had heard some strange sounds during the previous night. The Prime
Minister saw to his horror that all the valuables were missing and only a single diamond was left,
perhaps inadvertantly, by the theif. He put the diamond in his oiwn shift pocket as its loss could be
ascribed to the thief and nobody would suspect the Prime Minister. The Prime Minister went back to
the king. The king particularly enquirerd. "Do you mean that the theif has completely denuded the
treasury of its valuables and not a single item has been left?" The Prime Minister confirmed it. The king
asked the chief of police to bring in Kalu. When Kalu came he was unable to recfognize the king as his
accomplice of the previous night. The king asked him, "Are you the theif who has stolen everything from
my treasury leaving nothing back?" Kalu confirmed it but said, "Sir, I did leave one diamond back in the
locker as advised by an accomplice of mine and it should st ill be there." The Prime Minister interrupted
saying, "Your Majesty, this thief is lying. There is nothing left in the locker." The king asked the police
chief to search the pockets of the Prime Minister, from where the missing diamond was recovered. The
kind told his courtiers, "Here is a Prime Minister, who is a liar and a thief and here is a thief who is at
truthful gentleman."
1. The king came out in the middle of the night in order to ...
a) Help Kalu to break into the palace treasury
b) Share the loot equally between Kalu and himself
c) Find out the source of and reason for the sound he had heard
10. d) Catch the thief who had come to steal his valuables
e) None of these
2. Kalu could not recognize the kjing because ...
a) The king was wearing clothes like those of an ordinary person
b) The king's clothes were covered by a simple nightgown
c) Kalu had never seen the king before
d) Kalu had not seen the king descending from his bedroom
e) None of these
3. Which of the following made the king suspect the Prime Minister? The Prime Minister's statement
that ...
a) Except for one piece of diamond all other valuables were stolen
b) All the valuables without any exception were stolen from the treasury
c) The thief was lying when he said h e had left one diamond back in the locker
d) The search for the diamond did not yield any favourable result
e) None of these
4. Which of the following horrified the Prime Minister?
a) The valuables missing from the King's treasury
b) A piece of diamond left in the locker
c) Certain strange sounds heard by the Prime Minister
d) The fact that the king suspected him of stealth
e) None of these
5. Choose the word which is most nearly the Same in meaning as the word given in bold as used in the
passage.
Accomplice
a) C-traveller
b) Collaborator
c) Controller
d) Coordinator
e) None of these
6.Choose the word which is most nearly the Same in meaning as the word given in bold as used in the
passage.
Ascribed
a) Attributed
b) Donated
c) Attached
d) Withdrew
e) None of these
11. 7. Choose the word which is most nearly the Same in meaning as the word given in bold as used in the
passage.
Denuded
a) Uncovered
b) Stripped
c) Destroyed
d) Eiscarded
e) None of these
8. Choose the word which is most Opposite in meaning of the word given in bold as used in the passage.
Inadvertently
a) Knowingly
b) Sensibly
c) Indifferently
d) Unwittingly
e) None of these
9. Choose the word which is most Opposite in meaning of the word given in bold as used in the passage.
Previous
a) New
b) Preceding
c) Novel
d) Subsequent
e) None of these
10.They decided to leave the diamond inside the locker because ….
A. They wanted some part of the wealth to be left for the Prime Minister.
B. It was difficult for them to carry the 3rd piece of diamond.
C. The total number of diamonds being odd, they had to leave out onepiece to facilitate equal
distribution.
a) None
b) All the three
c) Only A
d) Only B
e) Only C