• question_answer
                Given the number, 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers is:

    A)                                                                            3, 4 and 5, respectively                                 

    B)                 3, 4 and 4, respectively

    C)                 3, 3 and 4, respectively                                 

    D)                 3, 3 and 3, respectively

    Correct Answer: D

    Solution :

                    (i) All non zero digits are significant.                 (ii) Non zero digits to the right of the decimal point are significant.                 (iii) Zeroes to the left of the first non-zero digits in a number are not significant So, the number of significant figures for the numbers 161 cm, 0.161 cm and 0.0161 cm are same i.e., 3

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