Common factors of 49 and 77 are: 1 and 7.
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The greatest common factor (GCF) of 49, 77, and 91 is 7. To find the GCF, you first need to find the prime factors of each number: 49 = 7 x 7, 77 = 7 x 11, and 91 = 7 x 13. Then, identify the common prime factors among the numbers, which in this case is 7. Therefore, the GCF of 49, 77, and 91 is 7.
The GCF is 7.
The GCF is 7.
The GCF is 1.
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 49 and 77 is 7