Question

In the final answer of the expression (29.2 - 20.2) (1.79 x 10⁵ )
1.37
the number of significant figures is :
(a) 1 (b) 2
(c) 3 (d) 4

Answer 1

Answer:

d ......... ....... ..... . .

Answer 2

(b) 2

Explanation:

The final answer for the expression (29.2 - 20.2) (1.79 x 10^5) / 1.37 = 11.7591240876 * 10^5

Significant figures excludes exponent numbers. So the answer should have minimum 2 significant figures here.

(29.2 - 20.2) (1.79 x 10^5) / 1.37 = 12 * 10^5.

Option B is the answer.