Question

The greatest common factor of 126 and 98 is:

a) 2
b) 7
c) 14
d) 28

Answer 1

c) 14

Explanation:

Find the prime factorization of 98

98 = 2 × 7 × 7

Find the prime factorization of 126

126 = 2 × 3 × 3 × 7

To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 7

GCF = 14

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