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  1. If log 2 = 0.3010, then the number of digits in 264 is ?
    1. 18
    2. 19
    3. 20
    4. 21
Correct Option: C

Required answer = [64 log10 2] + 1
= [ 64 x 0.3010 ] + 1
= 19.264 + 1
= 19 + 1
= 20


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