Question

What is the greatest common factor of 117 & 351

And What is the greatest common factor of 35 & 149

Answer 1

117 and 1

Explanation:

117 and 351 = GCF of 117

35 and 149 = GCF of 1

Answer 2

so we factor out the number and find the number in both numbers so
117=3*3*13
351=3*3*13*3
so the greatest common factor of 117 and 351 is 3*3*13=117

35=7*5
149=prime=149 (prime means no whole factors)