CREST Mental Maths Olympiad Class 11 Previous Year Papers

Q.1

In the figure, find BC.

Q.2

In the adjoining figure, chord AB is at a distance of 5 cm from centre O of the circle. Find radius of circle if length of the chord is 24 cm.

Q.3

Solve:
(3⁶ ÷ 3³) x 3⁰

Q.4

ABC is an isosceles triangle in which ∠C = 90°. If AC = 6cm, find AB².

Q.5

If three angles x, y, and z are angles as shown in the figure. Find the value of 1/2z if x = 58^o and y = 42°.

Q.6

Find ∠QOP.

Q.7

The line - graph gives the annual profit earned by a company during the period 2017-2022. Study the line graph and answer the question that are based on it.
If the income in 2022 was $264 million, what was the expenditure in 2022?

Q.8

The volume of the right circular cylinder is 792 cm³, height of the cylinder is 7 cm. Find the radius.

Q.9

Over the summer Jason grew from 70 inches to 73.5 inches. What percent has Jason’s height increased?

Q.10

Three cubes of the same metal, whose edges are 6, 8, and 10 cm are melted and formed into a single cube. Find the diagonal of the single cube.