Q.

If a=log24 12, b=log36 24 and c=log48 36, then 1+abc is equal to

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a

2ac

b

2bc

c

0

d

2ab

answer is C.

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Detailed Solution

a=log24 12=log 12log 24=2 log 2+log 33 log 2+log 3

b=log36 24=3 log 2+log 32log 2+log 3

c=log48 36=2log 2+log 34 log 2+log 3

abc=2 log 2+log 34 log 2+log 3

1+abc=6 log 2+2 log 34 log 2+log 3=2.3 log 2+log 34 log 2+log 3=2bc.

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