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Subject :IMO    Class : Class 7

An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?

A20 seconds
B40 seconds
C39 seconds
D30 seconds


Ans 1:

Class : Class 7

Ans 2:

Class : Class 9

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8

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