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Find the no. of digits in 8 57 (given that log 102 = 0.3010)

Correct Answer: 52

Explanation:

857 = (23)57 = 2171
∴ Required answer = (171 log10 2 + 1 )
= [171 x 0.3010] + 1 = [51.4710] +1
= 51+1 =52


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