What is the quotient of 2.43 ÷ 4.561 expressed to the correct number of significant figures?
A)5.3278 × $10 ^ { - 1 }$
B)5.328 × $10 ^ { - 1 }$
C)5.33 × $10 ^ { - 1 }$
D)5.3 × $10 ^ { - 1 }$

Question

Quizplus · Accepted Answer

The number 2.43 has three significant figures, and 4.561 has four significant figures. The quotient should be expressed with the least number of significant figures, which is three. Therefore, 2.43 ÷ 4.561 = 0.53278, rounded to three significant figures, is 5.33 × $10^{-1}$.

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