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The table shows the exponent of each prime in 2520, but one entry is missing. What is it?

Class 7Prime Factors in Exponent FormNumber System

A2
B3
C1
D0

Step-by-Step Solution

2^{3} \times 5 \times 7 = 280

and

2520 \div 280 = 9 = 3^{2}

. So the exponent of 3 is 2:

2520 = 2^{3} \times 3^{2} \times 5 \times 7

.

Answer: A) 2

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