11. A number is decreased by 20% and then increased by 40%.Find the percentage change in the number.

A. 20 

B. 12 

C. 60 

D. 40 

12. The price of 4 apples and 6 mangoes is Rs.62 and the price of 6 apples and 4 mangoes is Rs.58. Find the price of 3 apples and 5 mangoes.

A. Rs.45 

B. Rs.34 

C. Rs.60 

D. Rs.50 

13. A die and a coin are tossed simultaneously. The probability that the die showing a prime number and the coin showing a head is

A. 1/2 

B. 1/3 

C. 2/3 

D. 1/4 

14. In what ratio should a class with average marks 34 be mixed with a class with average 22, so that the average of the mixed class is 31.

A. 1:3 

B. 3:1 

C. 2:5 

D. 5:7 

15. Find the value of `[(0.8)^3 – (0.2)^3]/[(0.8)^2 + 0.16 + (0.2)^2]`

A. 1 

B. 0.6 

C. 0.64 

D. 0.5 

16. Find the number of divisors of 36 excluding 1 and 36.

A. 13 

B. 11 

C. 10 

D. 7 

17. Find the greatest

A. 2^1/2 

B. 4^1/4 

C. 6^1/6 

D. 3^1/3 

18. In how many ways can a person put 4 letters in 4 envelopes such that exactly three letters are in their respective envelopes?

A. 23 

B. 18 

C. 1 

D. 0 

19. How many numbers can be formed between 200 and 1200, using the digits 0, 1, 2 and 3, such that there is no repetition?

A. 48 

B. 16 

C. 32 

D. 14 

20. If 6x^2 + 6y^2 = 13xy, find x:y.

A. 2:5 

B. 3:2 

C. 1:2 

D. 4:5 

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