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Asha wrote four numbers in prime-power form. One row in her notebook is wrong. Which number did she write wrongly?

Class 7Prime Factors in Exponent FormNumber System

A48
B75
C120
D98

Step-by-Step Solution

2^{4} \times 3 = 48

✓,

3 \times 5^{2} = 75

✓,

2 \times 7^{2} = 98

✓, but

2^{2} \times 3 \times 5 = 60

, not 120. Correct:

120 = 2^{3} \times 3 \times 5

.

Answer: C) 120

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