Question
What is the number of digits in 540? (Given log102 = 0.3010)
Answer: Option A
:
A
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:
A
log 540=40 log 5=40×[log(102)]=40(log 10−log 2)
=40(1−0.3010)=40×0.6990=27.96.
Characteristic = 27. Hence, the number of digits in 540 is 28.
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