Question

Which of the following has maximum number of significant figures (i)0.00453 (ii)4.8046 (iii)5.643

Answer 1

(i) - 3 significant figures

(ii) - 5 significant figures

(iii) - 4 significant figures

Answer : (ii) has the most number of significant figures.

Answer 2

4.8046 has maximum number of significant figures.

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant.

All zero’s between integers are always significant.

All zero’s preceding the first integers are never significant.

All zero’s after the decimal point are always significant.

0.00453 has 3 significant digits (ii)4.8046 has 5 significant digits  and (iii)5.643 has 4 significant digits

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