what is the gcf for 84 and 126
a. 42
b 21
c 18
d 7
i got: 42
is that right?
Right.
yeah right
Yes, you are correct. The greatest common factor (GCF) of 84 and 126 is indeed 42. To find the GCF, you can follow these steps:
1. List the factors of both numbers:
- The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84.
- The factors of 126 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, and 126.
2. Identify the common factors:
- The common factors of 84 and 126 are 1, 2, 3, 6, 7, 14, 21, and 42.
3. Determine the greatest common factor:
- The largest common factor among the given factors is 42.
Therefore, 42 is the GCF for 84 and 126.