Question

The number of significant figures in $6.02\times {10}^{23}$ is :

• A. 23
• B. 3
• C. 4
• D. 26

Answer 1

Answer: (B)

3

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 $6.02\times {10}^{23}$ contains 3 significant figures.

All the three digits ($6,0$ and $2$) are significant.

Hence, option B is correct.