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Question

log105+log1082log102 =
  1. 4
  2. log102
  3. 1


Solution

The correct option is C 1
Given log105+log1082log102
[We know logam+logan=logamn]
= log105×82log102
[As loganm=m logan]
= log105×8log104
[Also  logamn=logamlogan]
= log10404
= log1010=1

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