![]() If you add 3 to the first number, 3 is subtracted from the second number, the third is multiplied by 3 and the fourth is divided by 3, then all the result are equal. How can you obtain 64 by using numbers 4 and 3? Prime Factorization of 10: 2 × 5 = 2 × 5.1 x 10 = 10, so 1 and 10 are also factors of 10. ![]() 2 x 5 = 10, so 2 and 5 are factors of 10. You can also look at this the other way around: if you can multiply two whole numbers to create a third number, those two numbers are factors of the third. What multiples can go into 64?Ħ4 = 1 x 64, 2 x 32, 4 x 16, or 8 x 8. Therefore the required common factors are 1, 2, 4, 8, 16, 32 and 64. ![]()
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