0
Anonymous
Yes: 1, 3, 9, 11, 33 and 99.
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1, 3, 9, 11, 33, 99.
1, 3, 11, 33.
1, 3, 9.
1 3 9 11 27 33 81 99 297 891.
99
1, 3, 5, 9, 15, 45 1, 3, 9, 27, 81 1, 3, 9, 11, 33, 99
The highest common factor of 81 and 63 is 9
The number is 1.