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

The triple point of water is $................$ $K$. (in $.16$)

Three successive measurements in an experiment gave the values $10.9$,$11.4042$,and $11.42$. The correct way of reporting the average value is

Which of the following have the same number of significant figures?
$(A)$ $0.00253$
$(B)$ $1.0003$
$(C)$ $15.0$
$(D)$ $163$
Choose the correct answer from the options given below:

Write a note about The International System of Units $(SI)$.

Given the numbers: $161 \ cm, 0.161 \ cm, 0.0161 \ cm$. The number of significant figures for the three numbers are