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Question

Express log135 in terms of m and n if m=log15 and n=log3.


A

2mn

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B

m + 2n

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C

2m + n

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D

m + n

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Solution

The correct option is

B

m+2n



log135=log(15×3×3)

=log15+log3+log3

=log15+2log3

=m+2n


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