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For an experimental expression y=(32.3×1125)/(27.4), where all the digits are significant. Then to report the value of y we should write

Asked in JEE Main 24th Jan 1st Shift 2025 · Significant figures and rounding

Answer: (2) y=1330

Step-by-step solution

Given: 32.3 (3 significant figures), 1125 (4), 27.4 (3).

Idea: in multiplication and division the answer carries as many significant figures as the least precise factor, here 3.

Raw value: (32.3×1125)/(27.4)=(36337.5)/(27.4)=1326.19.

Rounded to three significant figures: 1330.

Why the other options are wrong

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