Maths Quiz for class 9th to 12th.

1. Round 1
Rules:
1) Two questions will be asked to each team
2) 10 marks will be awarded for the correct answer
3) 5 marks will be deducted for the incorrect answer
4) A team can pass the question, for which no marks will be deducted.
5) A team giving the right answer on a pass question will be awarded 5
marks. Deduction of 5 marks for the incorrect answer will be there.

2. Q1. A fraction has the denominator greater than its
numerator by 6. But if you add 8 to the
denominator, the value of the fraction would then
become 1/3. Find the fraction?
(a) 5/11
(b) 7/13
(c) 23/17
(d) 4/9

3. Correct Answer
(b) 7/13

4. Q2. cos 10 + cos 20 + cos 30 + : : : + cos1790 =
(a) 0
(b) 1
(c) -1
(d) 89

5. Correct Answer

6. Q1. The sum of the three consecutive even
numbers is 222. Find the numbers.
(a) 73,74,75
(b) 58,60,62
(c) 72,74,76
(d) 54,55,56

7. Correct Answer
(c) 72,74,76

8. Q2. Which of the following is not true?
(a) sinፀ = -3/4
(b) cosፀ = -1
(c) tanፀ = 25
(d) secፀ = 1/4

9. Correct Answer

10. Q1. The ratio of girls: boys in a school is 5:7. If there
are 525 girls, how many boys are there?
(a) 375
(b) 625
(c) 735
(d) 325

11. Correct Answer

12. Q2. Let f:R➝R be defined by f(x)=1-|x|. Then the
range of f is
(a) R
(b) (1,∞)
(c) (-1,∞)
(d) (-∞,1]

13. Correct Answer

14. Q1. The price of an item increases by 20% and then
decreases by 20%. So the price has:
(a) Increased by 4%
(b) Decreased by 4%
(c) Increased by 0%
(d) Increased by 40%

15. Correct Answer

16. Q2. What is the total number of sample spaces
when a coin is tossed and a die is thrown?
(a) 6
(b) 12
(c) 8
(d) 16

17. Correct Answer

18. Q1. A is 40% of B. What percentage is B of A?
(a) 60%
(b) 140%
(c) 250%
(d) 160%

19. Correct Answer

20. Q2. What is the probability of getting the number 6
at least once in a regular die if it can roll it 6 times?
(a) 1 – (5/6)6
(b) 1 – (1/6)6
(c) (5/6)6
(d) (1/6)6

21. Correct Answer