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Find the common factors of 15 and 20.
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(A) 1, 5
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(B) 1, 3
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(C) 1, 2
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(D) 1, 4
That's Correct!
It's Wrong!
The common factors of 15 and 20 are numbers that can divide both 15 and 20 without leaving a remainder. The factors of 15 are 1, 3, 5, and 15, while the factors of 20 are 1, 2, 4, 5, 10, and 20. The common factors are 1 and 5, as they can both divide into both 15 and 20 without leaving a remainder. Therefore, the correct answer is (A) 1, 5.
