CREST Mental Maths Olympiad Class 10 Previous Year Papers

Q.1

What will come in place of question mark (?).
3, 6, 11, 18, 27, ?

Q.2

In the given figure, sides AB and CD of the quadrilateral ABCD are produced. Find the value of x.

Q.3

ABCD is a cyclic quadrilateral. If A = 95^o, then find the measure of ∠C.

Q.4

In the given figure, ABCD is a parallelogram. What are the values of x° and y°?

Q.5

Find the value of question mark (?).
65% of 240 + ? % of 150 = 210

Q.6

Find the value of k if x + 3 is a factor of 3x² + kx + 6 .

Q.7

A sum of money doubles itself in 10 years at simple interest. What is the rate of interest?

Q.8

The diameter of a right circular cone is 14 m, and its slant height is 12 m. Find the curved surface area.

Q.9

If x stands for -, / stands for +, + stands for / and - stands for x, which one of the following equations is correct?

Q.10

In the adjoining figure. Find x.