1, 3, 7, 21: 1 x 21, 3 x 7
Any number can be multiplied by 21
The numbers that multiply to 294 and add to 7 are 14 and -21. When you multiply 14 and -21, you get 294 (14 * -21 = -294). When you add them together, 14 + (-21) equals 7 (14 - 21 = -7).
How about: 3*7 = 21 or 1*21 = 21
21
21 and 5
Any number can be multiplied by 21
How about: 3*7 = 21 or 1*21 = 21
21 multiplies to 21 to make it 441
21*5 is the answer
3 x 7 1 x 21
1 x 21, 3 x 7
57
21
21*6=126
2*21 = 42
21 and 5
2 when multiplied by 21 = 42