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Logarithm - General Aptitude

Q1:

log 8 is equal to:
log 8

A
1
8

B
1
4

C
1
2

D
1
8

ANS:C -

1
2

log 8 = log (8)1/2 = log 8 = 1 .
log 8 log 8 log 8 2