CREST Mental Maths Olympiad Class 11 Previous Year Papers

Q.1

Find the mode in the data given below:
     1,1,7,9,5,4,5,9,5,6,7,2,3,2,4 

Q.2

Find y.

Q.3

At present, the age of a father is three times that of his son. Five years hence, the father's age would be two times that of his son. Find the present age of the son.

Q.4

In the given figure, P || Q, what is the value of x?

Q.5

A and B together can do a piece of work in 6 days and A alone can do it in 9 days. In how many days can B alone do it?

Q.6

What is the remainder when p(x) = x³ - ax² + 6x - a is divided by x - a?

Q.7

ABCDEF is regular hexagon. What is the value of the exterior angle X?

Q.8

The true discount on a bill due 10 months at 15% per annum is $225. What is the amount of bill?

Q.9

In the figure, find BC.

Q.10

What should be subtracted from the polynomial x² – 16x + 30 so that x = 15 is a zero of the polynomial?