The numbers and on rounding off to 3 significant figures will give:
a) and
b) and
c) and
d) and
The answer is the option
Explanation:
Here the fourth digit is five and is preceded by, viz., an even no. Hence, it becomes 2.74.
Here the fourth digit is 5, but the preceding digit is 3, viz., an odd no. Hence, it is increased by 1, and we get 2.74.