PHYSICS · Single correct · CBSE · Physics · Units and Measurements · Units and Measurements
Problem
When rounding a number, what should you do if the first digit to be discarded is exactly 5 and it is followed only by zeros?
(a) Always leave the last retained digit unchanged
(b) Increase the last retained digit by 1 only when the next discarded digit is greater than 5
(c) Make the last retained digit even before discarding the rest
(d) Always increase the last retained digit by 1