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Question

Find the value of (214−1)(234+212+214+1)

A
2
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B
3
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C
5
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D
1
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Solution

The correct option is C 1
(2141)(234+212+214+1)
Let 214=a
Then, the given exp =(a1)(a3+a2+a+1)
=(a1)(a2(a+1)+1(a+1))
=(a1)(a+1)(a2+1)
=(a21)(a2+1)
=a41
Required value = (214)41=21=1

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