Question

What is the rounding off of a number?

(a) To change a number to its nearest prime number

(b) To change a number to its nearest odd number

(c) To change a number to its nearest whole number

(d) To change a number to its nearest even number

I had been asked this question during an interview.

This interesting question is from Errors in Data and Calculations topic in division Presentation and Analysis of Data of Bioprocess Engineering

Answer 1

Correct answer is (c) To change a number to its nearest whole number

For explanation: To reduce successively the number of digits to the right of the decimal point of a mixed number by dropping the final digit and adding 1 to the next preceding digit if the dropped digit was 5 or greater, or leaving the preceding digit unchanged if the dropped digit was 4 or less.