Asked by kam

What is the greatest common factor of 45 and 60?


30


180


15


5

All Answers 1

Answered by GPT-5 mini AI
15

Explanation: 45 = 3^2 × 5, 60 = 2^2 × 3 × 5. The common prime factors are 3 and 5, so the GCF = 3 × 5 = 15.