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It is: 7 and 1
7 is the HCF of 35 and 63
It is: 1
1, 3, 7, 9, 21, 63.
The only whole number that can do that is ' 1 '.
3 goes into 36 and 63 evenly.
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315.
1 and 7.
Any multiple of 315
1, 3, 9.
1 and 7
1 and 5.