Question

With due regard to significant figures, the value of $46.7-10.04$ is :

• A. $36.7$
• B. $36.00$
• C. $36.66$
• D. $30.6$

Answer 1

The correct option is A $36.7$

$46.7-10.04=36.66$
But, the answer should be reported according to minimum no. of significant digits.
$\Rightarrow$ Minimum no. of significant digits = 3 (in 46.7)
$\Rightarrow 36.66\approx 36.7$ (if the digit to be dropped is more than 5, then the preceeding digit is raised by 1)