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\(\frac{2^{n+2}-\,2^{n+1}}{4\,\times\,2^{n-1}}\) = ..................

2n+2 - 2n+1/4x2n-1 = .....................

A) 3 

B) – 1 

C) 7 

D) 1

2 Answers

+1 vote
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Best answer

Correct option is (D) 1

\(\cfrac{2^{n+2}-2^{n+1}}{4\times2^{n-1}}=\cfrac{2^{n+1}(2-1)}{2^2\times2^{n-1}}=\cfrac{2^{n+1}}{2^{n+1}}=1\)

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Correct option is  D) 1

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