CMAT Logical Reasoning 4

Question 1

If P means ÷, Q means ×, R means +, and S means −, what is 18 P 3 Q 4 R 5 S 2?

Accepted Answer

27

Answer

Substituting: 18 ÷ 3 × 4 + 5 − 2 = 6 × 4 + 5 − 2 = 24 + 5 − 2 = 27.

Question 2

Find the missing number: 5, 11, 23, 47, ?

Accepted Answer

95

Answer

Each term is 2× previous term + 1: 5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95.

Question 3

In a group, some people speak French, and all French speakers speak English. Can we conclude that all English speakers speak French?

Accepted Answer

No, English speakers may not speak French

Answer

The statement 'all French speakers speak English' does not imply the reverse; there may be English speakers who don't know French.

Question 4

Water : Thirst :: Food : ?

Accepted Answer

Hunger

Answer

Water satisfies thirst just as food satisfies hunger — the relationship is need-to-fulfillment.

Question 5

A man walks 5 km north, turns right and walks 3 km, turns right and walks 5 km. How far is he from the starting point and in which direction?

Accepted Answer

3 km East

Answer

He ends up 3 km east of the starting point after the north-east-south path cancels the vertical displacement.

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