find the greatest common factor ( gfc ) of 24, 40 and 60.
Choose the correct choice:
A) 1  B) 2  C) 3  D) 4  E) 5
<gadget id="calculator">gcd(24, 40)</gadget>
<output>8</output>

<gadget id="calculator">gcd(8, 60)</gadget>
<output>4</output>

<result>D</result>
find the greatest common factor ( gfc ) of 24, 40 and 60.
gcd(gcd(24, 40), 60)
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 d ) 4