What is the greatest common factor (GCF) of 10 and 66?

About this MCQ

Medium ACT item. Correct choice: A. 2.

Correct answer

A. 2

Explanation

2 is the value that answers “What is the greatest common factor (GCF) of 10 and 66” (option A). Option B (76) is a different value from 2. Option C (4) is a different value from 2. Option D (330) is a different value from 2. Keep 2 as the ACT fact for this stem.

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