Write the factors of 120 as pairs.

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(1, 120) (2, 50) (3, 40) (4, 60) (5, 30) (6, 20) (8, 34) (10, 22)

(1, 60) (2, 80) (3, 50) (4, 90) (5, 20) (6, 25) (8, 60) (10, 12)

(1, 120) (2, 60) (3, 40) (4, 30) (5, 24) (6, 20) (8, 15) (10, 12)

(1, 50) (2, 80) (3, 60) (4, 60) (5, 34) (6, 120) (8, 24) (10, 20)

answer is C.

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Detailed Solution

Now, we find the prime factors of 120.
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Hence, 120 can be written as follows:
120=2×2×2×3×5

Now, we can multiply the factors, to form pairs.
1×120=120
2×60=120
3×40=120
4×30=120
5×24=120
6×20=120
8×15=120
10×12=120

Hence, the factors of the 120 in pairs are : (1, 120), (2, 60), (3, 40), (4, 30), (5, 24), (6, 20) (8,15), and (10, 12).

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