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Write down the number of significant figures in the following: 0.003 m²,0.1250 gm cm2, 6.4 x 106 m, 1.6 x 10-19C, 9.1 x 10-31 kg.[Ans: 1, 4, 2, 2,2]​

Answer» 3, 4, 2, 2Explanation:Zero before the decimal point is not a significant figure.Same for the second one. Zero after the decimal point is a significant figure.For counting significant FIGURES of the LAST two, you will neglect the power term and only COUNT the significant figures of the preceding decimal number.


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