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Significant figures

This type of question, asked 3 times: 2021 Paper 25, 29 Jun 2022, 8 Apr 2023. All 3 questions below, oldest first.

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  1. Question 1

    2021 Paper 25

    54
    The number of significant figures in 50000.020×10−350000.020 \times10^{- 3} is

  2. Question 2

    29 Jun 2022

    121
    Using the rules for significant figures, the correct answer for the expression 0.02858×0.1120.5702\frac{0.02858 \times 0.112}{0.5702} will be:

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  3. Question 3

    8 Apr 2023

    121
    Which of the following have same number of significant figures? (A) 0.00253 (B) 1.0003 (C) 15.0 (D) 163 Choose the correct answer from the options given below

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