How many of the following numbers contain 3 significant figures? 0.105 5.600 0.0300 7.00 × 10² A)one B)two C)three D)four

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0.105, 5.600, and 0.0300 each contain 3 significant figures. 0.105 has three numbers after the leading zeros, which are not significant. 5.600 has three significant figures after the decimal point, indicating precision. 0.0300 has two leading zeros which are not significant, but the two zeros after the 3 are significant because they are to the right of the decimal point and after a non-zero digit. The notation 7.00 × 10^12 has three significant figures (the digits in 7.00), but it's not listed as an option to count.

How Many of the Following Numbers Contain 3 Significant Figures