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Question

(2n+1)m(22)n2n(2m+1)n22m=1 then m= ..........

A
0
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B
1
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C
n
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D
2n
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Solution

The correct option is D 2n
(2n+1)m(22)n2n(2m+1)n22m=1

(2mn+m).(22)n.2n(2mn+n).22m=1

2mn.2m.22n.2n2mn.2n.22m=1

22n2m=1

22n=2m

m=2n

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