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Question

N=23×32×53×10. If P is a natural number, then how many factors of N are of the form 2P+1?

A
14
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B
15
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C
13
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D
12
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Solution

The correct option is A 14

N=24×32×54. Ultimately, we need to find out the number of odd factors of N except 1. Number of odd factors (including 1) =(2+1)×(4+1)=3×5=15.

Answer- (151)=14.


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