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Question

The number of significant figures in $i - b; i i - a; i i i - d; i v - c$ is :
$8$
$3$
$4$
infinite

A

8

B

4

C

infinite

D

3

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Solution

Verified by Toppr

When numbers are written in scientific notation, then the number of digits between 1 and 10 gives the number of significant figures.

Thus, the number, $5.23 \times 10^{5}$ contains 3 significant figures.

All the three digits ( $5, 2$ and $3$ ) are significant.

Hence, option B is correct.

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The number of significant figures in

5.23 \times 10^{5}

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