High School Placement Test Prep

Category - SHSAT Practice Test Question

What is the greatest common factor of 30 and 60?
  1. 30
  2. 60
  3. 90
  4. 10
Explanation
Answer: A-The greatest common factor of 30 and 60 is 30. Factors are numbers you multiply together to get another number. The shared factors of 30 and 60 are [1, 2, 3, 5, 6, 10, 15, 30], the largest of which is 30.
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