The number of significant digits of `8.65000xx10^(50)` is

Options

A. 6
B. 3
C. 50
D. 55

Answer

A

Explanation

(i) Consider `10^(50)` as one unit and find the number of significant digits in the given number.
(ii) Assume `10^(50)` as 1 digit.
The significant figures is `N(10^(k)` is the number of significant figures in N.