36
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The GCF is 252.
7 is the greatest common factor; it divides evenly into all of the numbers.
756 378,2 189,2,2 63,3,2,2 21,3,3,2,2 7,3,3,3,2,2
The GCF is 18.
To find the highest common factor (HCF) of 735 and 756, we can use the Euclidean algorithm. First, divide 756 by 735 to get a quotient of 1 and a remainder of 21. Then, divide 735 by 21 to get a quotient of 35 and a remainder of 0. The last non-zero remainder is 21, so the highest common factor of 735 and 756 is 21.