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Question

If mn then (m+n)1 × (m1 + n1) = ______


A

mn

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B

0

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C

m1n1

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D

m2n2

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Solution

The correct option is C

m1n1


Given

(m+n)1 × (m1 + n1),

1m+n × (1m+1n) (am = 1am)

1m+n × (m+nnm)

m+n(m+n)mn = 1mn = (mn)1

(mn)1 = m1n1 ((ab)m = am×bm)


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