Finding Significant Figures

Q.

How many significant figures are there in the product:

$(2.156\times {10}^1)\times (4.567891\times {10}^2)\times (5.1102\times {10}^3)$

1. 3

2. 4

3. 7

4. 10

Q. Which is more precise?

1. 14
2. 14
3. 14
4. All have same precision

Q.

Is there a difference between the given measurements:

a) 7

b) 7.0

c) 7.00

1. yes

2. No

Q. Find the number of significant figures in the given data
$\begin{array}{cc}\text{P)}0.543& \text{U)}3\\ \text{Q)}4.330& \text{V) 4}\\ \text{R)}1.32\times {10}^{-2}& \text{W)}5\\ \text{S)}0.002& \text{X)}1\end{array}$

1. p-v, q-v, r-u, s-u

2. p-v, q-v, r-u, s-v

3. p-u, q-u, r-u, s-u

4. p-u, q-u, r-u, s-x

Q. Match the following surface areas of the cubes with the length of their respective sides:

1. 8 units
2. 4 units
3. 1 unit
4. 3 units

Q. Match the following surface areas of the cubes with the length of their respective sides:

1. 8 units
2. 4 units
3. 1 unit
4. 3 units

Q. Find the number of significant figure in 2435.67 using scientific notation.

1. 2
2. 3
3. 4
4. 6