Posted by **Holly** on Tuesday, August 18, 2009 at 8:34pm.

Find each of the following.

(a) GCD(12, 26, 65)

(b) LCM(12, 26, 65)

- math?* -
**Reiny**, Tuesday, August 18, 2009 at 9:04pm
the GCD for 12,26,65 is 1

that is, there is no divisor or common factor other than 1 which divides into all 3 numbers

for LCM

12 = 2x6

26 = 2x13

65 = 5x13

so we need 2x6x13x5 or 780

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