The answer is 11.
To find the Greatest Common Factor of a set of numbers, first find the prime factors of each number.
77 = 7 x 11
132 = 2 x 2 x 3 x 11
143 = 11 x 13
Then notice the factor(s) in common to every number, and multiply them together if there are more than one.
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The Greatest Common Factor of 99, 132, 165: 33
66
The GCF is 12.
In this example, we will find the greatest common factor of 132 and 500: Press MATH and scroll over to NUM on the top. Scroll down and select option 9, "gcd(". (This stands for greatest common denominator.) Type the first number, followed by a comma, followed by the second number. Then type and ending parenthesis. In this example, you should have: gcd(132,500) Press ENTER. In this example, the answer should be 4.
Well, isn't that just a happy little question! To turn 132% into a fraction, you simply write it as 132/100. Then, you can simplify this fraction by dividing both the numerator and denominator by their greatest common factor, which in this case is 4. So, 132% as a fraction in simplest form is 33/25. Just like that, we've turned percentages into a lovely little fraction!