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Question

If 352272=31a,
then find the value of a.

A
12
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B
14
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C
16
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D
28
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Solution

The correct option is C 16
Given : 352272=31a

Using the identity,
a2b2=(a+b)(ab)

352272=(35+27)(3527)
31a=(35+27)(3527)
31a=62×8
a=16

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