question_answer

The length, breadth and height of a room are 403 cm, 434 cm and 465 cm respectively. Find the longest tape which can measure the three dimensions of the room exactly.

A)  31 cm

B)  30 cm

C)  25cm

D)  35cm

Correct Answer: A

Solution :

Dimensions of room are 403 cm, 434 cm and 465 cm. The longest tape which can measure the all dimensions of the room exactly is the HCF of 403, 434 and 465. \[\therefore \] HCF = 31 So, length of longest tape = 31 cm