Question

What is the number of significant figures in the number 0.00025?

• A. 2
• B. 5
• C. 3
• D. 6

Answer 1

The correct option is A

2

1. In any number, significant figures denote the number of all the certain digits including one doubtful digit. The number of significant figures depends on the precision of the instrument which we are using.
2. In 0.00025 the total number of the significant figure is 2. Non-zero digits are always significant and in decimal zeros between the decimal and non-zero digits are not significant.

Hence the correct option is (A) 2