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Question

72log75=


A

log735

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B

5

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C

25

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D

log725

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Solution

The correct option is C

25


Explanation for the correct option:

Use the logarithmic relation to simplify the expression.

Given: 72log75

Shift 2 inside the logarithm.

72log75=7log752=7log725 [alogb=logba]

=7log725=25 [alogab=b]

Hence, option (C) is the correct answer.


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