Find the greatest number which will divide 772 and 2778 so as to leave remainder 5
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With remainder zero, it will divide 135 ( that is 3x3x3x5), 180 (that is 3x3x5x2x2), and 420 (that is 5x2x2x3x7).
You can take 5x3 out of each of these sets of prime factors but no other prime factors. So the answer is 15.
You can take 5x3 out of each of these sets of prime factors but no other prime factors. So the answer is 15.
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