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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-34

  • question_answer
    The respective number of significant figures for the number 24.05, 0.005, 2.20 and \[3.1\times {{10}^{21}}\]arc.

    A)  4, 1, 3, 2

    B)  4, 3, 2, 2

    C)  4, 1, 2, 2

    D)  3, 1, 3, 2

    Correct Answer: A

    Solution :

    All non-zero digits are significant. All zero between two non-zero digit are significant when decimal is present then all zero after first non-zero digits are also significant powers of 10 are not consider counting of significant figure.


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