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Question

Find the value of 16×2n+14×2n16×2n+22×2n+2.

A
14
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B
12
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C
1
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D
2
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Solution

The correct option is B 12
Let u=16×2n+14×2n16×2n+22×2n+2
We know that am+l=am×al
Hence
u =16×2n×24×2n16×2n×222×2n×22
u=2n(16×24)2n(16×42×4)
=324648
=2856

u=12

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