Rounding off 3.435 to 3 significant figures will give ______.

Correct option is D

Correct Answer: (d) 3.44
Explanation
· We need to round 3.435 to 3 significant figures.
· The first three significant digits are: 3, 4, 3
· The next digit is 5 → Normally this rounds the previous digit up.
But for “round half to even” (also called banker’s rounding, often used in scientific rounding rules), when the digit is exactly 5, we round to the nearest even number.
· The third digit is 3 → the nearest even digit is 4.
· So 3.435 → 3.44
Information Booster
· Round half to even rule is used to avoid rounding bias in repeated calculations.
· Many scientific and mathematical contexts adopt this method.
Additional Knowledge
· Significant figures count meaningful digits starting from the first non-zero digit.
· Banker's rounding is often applied when the question doesn't specify the rounding method explicitly.