if log 3=0.4771,then the number of digits in (81)11 is
1) 20
2) 21
3)22
4)23
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Answer:
Log 3 = 0.4771
log 81¹¹ = 11 log 81
= 11 × log 3⁴
= 11 × 4 × log 3
= 44 × 0.4771
= 20.9924
No.of digits = 21
2) 21 is the answer
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