Question

Select the GCF of these numbers.

25 · 5· 11 and 23· 52 · 7

A. 22 · 3
B. 2· 112
C. 32
D. 23 ·5
E. 13 · 193 ·232

Answer 1

Any ideas or guessor clues?

Answer 2

C?

Answer 3

Ok sso You can get hte greatest common factor of three numbers by the same method you use for two numbers: splitting each number into prime factors and taking all common factors. Or, if you want to use Euclid's algorithm:
gcf(25, 5, 11) = gcf(gcf(25, 5), 11)).
In other words, you can take the greatest common factor of any two numbers, then the greatest common factor of the result and the third number.

Answer 4

I think a