Which of the following numbers has the maximum number of significant figures?

Question

Professor PC Thomas Classes · Answer

(A) $0.007$ has 1 significant figure. (B) $2.64 	imes 10^{24}$ has 3 significant figures. (C) $0.2370$ has 4 significant figures (the trailing zero after the decimal point is significant). (D) $6.32$ has 3 significant figures. Hence, $0.2370$ has the most.