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Question

Length of a board is 12 feet and width is 11 feet. How many boards of same area can be manufactured given that length and breadth of the board should have integer values and length is less than breadth..

A
5
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B
6
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C
7
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D
8
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Solution

The correct option is B 6
Length of floor =12 feet
Width of floor =11 feet
Area of floor = length×width
=11×12=132 feet2

132 is a composite number having factors other than 1 and itself.

Factors of 132 are
132=1×132132=2×66132=3×44132=4×33132=6×22132=11×12

Hence, 6 boards can be manufactured.

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