The GCF is 13.
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Oh, dude, the Highest Common Factor (HCF) of 13 and 39 is 13. It's like the biggest number that can divide both 13 and 39 without leaving a remainder. So, if you were throwing a party and had 13 cupcakes and 39 friends, each friend could totally get 3 cupcakes and you wouldn't have any leftovers.
13 has the factors of 1 , 13.
39 has the factors of 1,3,13.
Since '13' is the largest number in both numbers, then '13' is the HCF ( Highest Common Factor).
The Highest Common Factor (HCF) of 13 and 39 is 13. This is because 13 is a Prime number and the only factor that both 13 and 39 share is 13 itself. Therefore, the HCF of 13 and 39 is 13.
Well, honey, the HCF of 13 and 39 is 13. Why? Because 13 is the largest number that can divide both 13 and 39 without leaving a remainder. So, there you have it, the HCF is 13.