In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number of significant figures is
Options
(a) 1
(b) 2
(c) 3
(d) 4
Correct Answer:
3
Explanation:
(29−20.2)
It consists of two numbers, 29→ has two significant figures and 20.2→ has three significant figures. The final result of this expression should have Two Significant Figures
1.79 x 10⁵
In scientific notation, the number of significant figures is taken from the non-exponent part of the number. 1.79 has three significant figures.
The Least of all is 2. So, the final result must be stated in scientific notation with two significant figures.
View Comments (1)
I also think it must be 2 but according to NCERT and other websites it is 3 thus confusing