The Greatest Common Divisor (GCD) for 17 24 is 1.
GCD(24, 90) = 6
GCD: 1
GCD: 8
Greatest Common Divisor (GCD) for 18 24 is 6.
Greatest Common Divisor (GCD) for 24 56 72 is 8.
Divide the larger number by the smaller one and then replace the larger by the remainder. Repeat until a remainder is 0 or both numbers are 1. In the first case, the non-zero number is the GCD, in the other case, the numbers are coprme: GCD = 1. Thus GCD(85, 102) 102 = 1*85 + R = 17 so GCD(85, 17) 85 = 5*17 + R = 0 so GCD(0, 17) therefore 17. = GCD[85, (102-85)] = GCD(85, 17)
gcd(a,b) = greatest common divisor (or factor, whatever) of a and b. For any set of number, a1, a2, a3, ..., you can use the Euclidean algorithm (http://en.wikipedia.org/wiki/Euclidean_algorithm) to get the gcd(a1, a2), and then again to get gcd(gcd(a1, a2), a3), etc. Often, though, you can eyeball it. So 24*3 = 72. Therefore, gcd(24, 72)=24. 24 does not divide 132, but 12 does (the next biggest factor of 24), so gcd(24, 72, 132)=12.
answer=6
24
4 20 = 22 x 5 24 = 23 x 3 gcd = 22 = 4
The LCD is 1. The GCD is 17.
7/17 and the gcd is 35:1,5,7,35 85:1,5,19,85 Gcd=5 I think