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Anonymous
1, 3, 7, 21.
Wiki User
3*7 = 21
1 x 21, 3 x 7 = 21
They are: 25 minus 4 = 21
21 multiplies to 21 to make it 441
21 and 5
21+11 8x4
20 and 1
21*6=126
1, 2 and 21 when added.
3 and 7
21 and 22