Question

The correctly reported difference of 16.4215 and 6.01 will have significant figures equal to :

• A. three
• B. four
• C. five
• D. six

Answer 1

Answer: (B)

four

16.4215 - 6.01 $=$ 10.4115
The answer for subtraction should be reported to the number of decimal places as is there in the number with minimum decimal places.
As 6.01 has least number of decimal places viz. 2, therefore, reported difference = 10.41 also is reported to two decimal places and it has four significant figures.