CREST Mental Maths Olympiad Class 12 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

If the speed of a swimmer in still water is 9 km/h. Find the downstream speed of the swimmer, when the river is flowing at the speed of 6 km/h.

Q.2

In the figure, two men are on the opposite sides of a tower. If the height of the tower is 60 m. Find the distance between them.

Q.3

The archery target has three concentric circular regions. The diameter of the regions are in the 1 : 2 : 3. What is the ratio of their areas?

Q.4

Which number is divisible by 14?
57248, 124556, 89534, 484176

Q.5

One year ago, the ratio of Harry and Sam age was 6 : 7 respectively. Four years hence their ratio would become 7 : 8. How old is Sam?

Q.6

A man can row at 24 km/hr in still water. It takes him thrice as long to row up as to row down the river. Find the rate of stream.

Q.7

In ABC, AB = AC. ∠DBC = ∠DCB = 40o. Find x.

Q.8

If L stands for x, M stands for /, P stands for + and Q stands for -, which one of the following equations is correct?
1 6 P 2 4 M 8 Q 6 M 2 L 3 = ?

Q.9

Observe the graph below and answer the question.
What is the average of Diesel prices over the years 2020–2022?



Q.10

Find the radius of the largest right circular cone that can be cut out of a cube whose edge is 9 cm.

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Answers to Previous Year Questions from CREST Olympiads:

Q.1aQ.2aQ.3cQ.4cQ.5dQ.6cQ.7bQ.8cQ.9bQ.10a

Answers to Previous Year Questions from CREST Olympiads:

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

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