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

In the figure, ABCD is a cyclic quadrilateral. Side CD is produced to both sides so that ∠BCP = 110o and ∠ADQ = 95o. What is the sum of angles ∠A and ∠B?

Q.2

Simplify the expression:
(−5 + 72) [3 − (−6)3] + (−11 − 2)(8 − 12).

Q.3

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

Q.4

A, B, and C are partners. A receives 2/5 of the profit and B and C share the remaining profit equally. A's income is increased by $420 when the profit rises from 8% to 10%. Find the capitals invested by B and C together.

Q.5

How many years will it take for the amount of $600 to yield $120 as interest at 10% per annum of simple interest?

Q.6

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.7

A man can row at 12 km/hr and downstream at 12 km/hr. Find man's rate in still water.

Q.8

If the height of the frustum is 4 cm and the radii of two bases are 3 cm and 6 cm respectively, find the slant height of the frustum.

Q.9

Diameter of a wheel of a car is 70 cm. How much distance will it cover in 10 revolutions?

Q.10

The line graph shows the number of candidates applied for post P and post Q of a company between 2012 to 2017.
The number of candidates who applied for the post P in 2015 is approximately what percent of the total number of candidates who applied for post Q in all the years?



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Answers to Previous Year Questions from CREST Olympiads:

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

Answers to Previous Year Questions from CREST Olympiads:

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

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