No, 9 is not a factor of 50.
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54. 9*6=54
No. To test for divisibility by 9, add up the digits of the number and if that sum is divisible by 9, then 9 divides (that is is a factor of) the original number. 1 + 0 + 0 = 1 which is not divisible by 9, so 9 is not a factor of 100. The factors of 100 are: 1, 2, 4, 5, 10, 20, 25, 50, 100
There isn't one.27 has 2 factors 3 & 9 and neither can be divided into 50 with out a fraction in the answer.
One is the only factor of 50 that is a cube.
Since 50 is a factor of 200, it is automatically the GCF.