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Question

If log(ab)logb=32,Given that b = 4, find the value of a.

A

64

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B

16

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C

2

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D

4

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Solution

The correct option is B

16


log ab =log a + lob b
loga+logbloga=321+(logbloga)=32logbloga=12logba=2
Now,
log4a=2a=16

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