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Question

If log(abc)=log(bca)=log(cab) then aa×bb×cc=1

A
True
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B
False
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Solution

The correct option is A True
The question must be If logabc=logbca=logcab then aa×bb×cc=1

Solution:Let logabc=logbca=logcab=k(say)

loga=k(bc),logb=k(ca),logc=k(ab)

Let x=aa×bb×cc

or logx=aloga+blogb+clogc
or logx=ak(bc)+bk(ca)+ck(ab)
or logx=k(abac+bcba+cacb)=k×0=0

logx=0
or x=1
or x=aa×bb×cc=1

Hence the given statement is true.


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