First slide

Significant figures

Question

The correct reported value of 6.35 after rounding off it to two significant figures is

Easy

A

6.30
B

6.300
C

6.3
D

6.4

Solution

While rounding off, if the rightmost digit to be removed is 5 then the preceding number is increased by one provided the preceding number is an odd number.
In 6.35 the preceding number to 5 is an odd number hence it is reported as 6.4 ;

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