CREST Mental Maths Olympiad Class 10 Previous Year Papers

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Syllabus:

Number System
Algebra
Comparing Quantities
Geometry
Mensuration
Playing with Numbers
Data Handling

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	In the figure, OB and OC are bisectors of ∠B and ∠C of ΔABC respectively. If ∠BAC = 62^o, ∠ABC = 54^o, then find ∠BOC.

Q.2	A pair of sunglasses is priced at $50 and is on sale for 30% off. What is the final price of the sunglasses?

Q.3	In the figure, find ∠AOC if ∠AOB = 68^o and ∠BOC = 42^o.

Q.4	If the probability of winning a game is 0.7, what is the probability of losing it?

Q.5	If father is twice as old as his son and 29 years older than his son. What is the age of father?

Q.6	Express 4/(√5 - 1) with a rational denominator.

Q.7	300 m from the foot of a cliff on the level ground, the angle of an elevation of the top of a cliff is 30^o. Find the height of this cliff.

Q.8	A person covers a certain distance at a speed of 60 km/h and returns to the starting point at a speed of 40 km/h. Find the average speed of the person for the whole journey.

Q.9	Find the area of a triangle whose sides are 50 m, 78 m, 112 m respectively.

Q.10	What is the mean of first 12 prime numbers?

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Answers to Previous Year Questions from CREST Olympiads:

Q.1	a	Q.2	b	Q.3	b	Q.4	b	Q.5	c	Q.6	d	Q.7	b	Q.8	c	Q.9	a	Q.10	c

Answers to Previous Year Questions from CREST Olympiads:

Q.1 : a | Q.2 : b | Q.3 : b | Q.4 : b | Q.5 : c | Q.6 : d | Q.7 : b | Q.8 : c | Q.9 : a | Q.10 : c