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  1. log1010 + log10100 + log101000 + log1010000 + log10100000 is equal to ?
    1. 15
    2. log 11111
    3. log101111
    4. 14 log10 100
Correct Option: A

Given Exp. = log1010 + log10100 + log101000 + log1010000 + log10100000
= 1 + 2 + 3 + 4 + 5
= 15


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