Standard Form

The number of significant figures for the three number $161\mathrm{cm}, 0.161\mathrm{cm}, 0.0161\mathrm{cm}$  are:

The side of a cube is measured by vernier calipers ($10$ divisions of a vernier scale coincide with $9$ divisions of main scale, where $1$ division of main scale is $1 \mathrm{mm}$). The main scale reads $10 \mathrm{mm}$ and first division of vernier scale coincides with the main scale. Mass of the cube is $2.736 g$. Find the density of the cube in appropriate significant figures.

If $N_A,N_B$ and $N_C$ are the number of significant figures in $A=0.001204 \mathrm{m}, B=43120000 \mathrm{m}$,  and $C=1.200 \mathrm{m}$ respectively then

The order of magnitude of the given expression 9999 will be

Write the standard form of the decimal fraction $\frac{725}{10}$ .

The number of significant figures in $0.07800$ is

Standard form of number out of following is

Which of the following is the standard form of $\frac{98432268}{100000}$ ?

Which of the following numbers has two significant figures?

Find the sum of the significant digits of the L.C.M. of $0.14, 0.21, 0.35$.

The length of the pole is $42.3 \mathrm{m}$. Find the number of significant figures, when its length is expressed in kilometres.

The value of $56.0023$ corrected to four significant figures is _____.

The number of significant digits of $8.65000\times {10}^{50}$ is _____.

Evaluate $\frac{15}{\sqrt{2}-1}$ correct to four significant digits. (Take $\sqrt{2}=1.414$)

If number of significant digits of $a\times 3a$ is $3$, then which of the following is true?

Which of the following numbers has two significant figures?

How many significant figures does $717400$ have?

Number of significant digits of the H.C.F. of $0.5, 0.75$ and $1.25$ is _____.

Number of significant figures in $0.0035 {\mathrm{m}}^2$ are _____.