How many of the following numbers have 4 significant figures?
19.00 0.00006 1.609 x 10⁸ 13,600

Question

How many of the following numbers have 4 significant figures? 19.00 0.00006 1.609 x 10⁸ 13,600

Quizplus · Accepted Answer

19.00 has 4 significant figures because zeros after the decimal point count as significant figures. 1.609 x 10^18 has 4 significant figures because all the digits are significant in scientific notation. 13,600 has only 3 significant figures (assuming standard interpretation without additional context, as the zeros could be merely placeholders; if it were written as 13.600 x 10^3, it would clearly have 4 significant figures). 0.00006 has only 1 significant figure, the 6, because leading zeros do not count as significant figures.

How Many of the Following Numbers Have 4 Significant Figures