exam Maths Puzzle

A monkey tries to ascend a greased pole 14 m high. He ascends 2 m in first two minutes and slips 1 m in alternate minute. If he continues to ascend in this fashion, how long does he take to reach the top?

A.

26 min

B.

24 min

C.

22 min

D.

25 min

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exam Other Question

Wheel of diameter 7cm and 14 cm start rolling simultaneously from X and Y which are 1980cm apart towards each other in opposite directions. Both of them make same number of revolutions per second. If both of them meet after 10s, the speed of the smaller wheel is:

A.

22 cm/s

B.

44 cm/s

C.

66 cm/s

D.

88 cm/s

A train leaves station X at 5am and reaches station Y at 9am. Another train leaves station Y at 7am and reaches station X at 10:30 am. At what time do the two trains cross each other?

A.

7:36 am

B.

7:56 am

C.

8:36 am

D.

8:56 am