Find the greatest common factor (GFC) of 24, 40 and 60. Pick one
A) 1 B) 2 C) 3 D) 4 E) 5
We first write the prime factorization of each given number   24 = 2 × 2 × 2 × 3 = 23*Cubic* × 3   40 = 2 × 2 × 2 × 5 = 23*Cubic* × 5   60 = 2 × 2 × 3 × 5 = 22*square* × 3 × 5   GFC = 22*square* = 4   corect answer is 4) 4
<result>D</result>
Find the greatest common factor (GFC) of 24, 40 and 60.