How many significant figures are in \(0.0006032~\text{m}^2?\)
1. \(8\)
2. \(4\)
3. \(9\)
4. none of these

The number of significant figures in all the given numbers 25.12, 2009, 4.156 and $1.217\times {10}^{-4}$ is 

1. 1

2. 2

3. 3

4. 4

Taking into account the significant figures, what is the value of (9.99m - 0.0099m)?

1. 9.98 m

2. 9.980 m

3. 9.9 m

4. 9.9801 m

Number of significant figure in $6.020\times {10}^{23}$ is 

(1) 3

(2) 24

(3) 4

(4) 1

The length and breadth of a metal sheet are 3.124 m and 3.002 m respectively, the area of this sheet up to four correct significant figure is

1. 9.3782 $m^2$

2. 9.37 $m^2$

3. 9.378248 $m^2$

4. 9.378 $m^2$