99 = 3 * 3 * 11
132 = 2 * 2* 3* 11
hcf = 3 * 11
hcf =33
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132 factors into 4 X 3 X 11 and 84 factors into 4 X 3 X 7. Therefore, their highest common factor is 4 X 3 = 12.
The greatest common factor (GCF) of 102 and 132 is 6.
The GCF is 66.
The Greatest Common Factor (GCF) is: 12
44 :) hope this helps