Errors and Measurements: Rounding Rules MCQ

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Rounding RulesEasyQuestion 30160

Question

When rounding 2.45 to 2 significant figures, the result is:

A
2.4
Correct
B
2.5
C
2.0
D
2.45

Correct answer

2.4

Explanation

The third significant figure is 5 — when the digit to round is 5 and there's nothing after it, round to even (banker's rounding): 2.4 (even) is preferred. In many JEE contexts, rounding 2.45 → 2.4 or 2.5 are both accepted; the standard rule gives 2.4.

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