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If log 7=0.8451,then the position of the first significant figure of 7^(-20) is a.15 b.20 c.17 Can anyone elaborately explain me what is meant by significant figure?

If log 7=0.8451,then the position of the first significant figure of 7^(-20) is
a.15
b.20
c.17
Can anyone elaborately explain me what is meant by significant figure?

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
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