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Question

Which of these is a prime factor of 75?

A
15
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B
2
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C
25
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D
3
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Solution

The correct option is D 3
Let us look at the factors of 75.
1×75 = 75
3×25 = 75
5×15 = 75
The factors are 1, 3, 5, 15, 25, and 75.
15, 25, and 75 are the composite factors.
1 is neither prime nor composite.
3 and 5 are the prime factors.
Therefore, among the options given, the correct option is 3.

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