1
The factors of 49: 1 * 7 * 7.
The factors of 50: 1 * 5 * 5 * 2.
The only factor that both numbers have in common is 1.
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The GCF is 1.
The GCF is 1.
The GCF of 49 and 35 is 7.
By inspection, the only two numbers between 40 and 50 that have a GCF of 7 are 42 and 49.Another way to work out this problem is to list the multiples of 7. They are:7, 14, 21, 28, 35, 42, 49, 56, ...The values between 40 and 50 are 42 and 49.
Factors of 14=1,2,7,14 Factors of 49=1,7,49 GCF of 14 & 49=7