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Question
The common factor of 20 and 25 except 1 is:
The common factor of 20 and 25 except 1 is:
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Solution
The correct option is A 5
The factors of 20 are 1, 2, 4, 5, 10 and 20.
The factors of 25 are 1, 5 and 25.
⇒ 5 and 1 are the only common factors for 20 and 25.
5
The factors of 20 are 1, 2, 4, 5, 10 and 20.
The factors of 25 are 1, 5 and 25.
⇒ 5 and 1 are the only common factors for 20 and 25.
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