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How do you find all the factors of 63?
The rules of divisibility tell you that 63 is divisible by 1 (because all integers are), 3 (because its digits total a multiple of 3) and 9 (because its digits total a multiple of 9) Dividing those numbers into 63 gives you the other three (63, 21 and 7) (1, 3, 7, 9, 21, 63)
What are the least four factors of 780 using the divisibility rule?
780 is divisible by 2 because it's even. 780 is divisible by 3 because its digits total a multiple of 3. 780 is divisible by 5 because it ends in a 0. 780 is divisible by 10 because it ends in a 0.
How do you know if 436 is divisible by 3?
Add the digits. If the total is divisible by three, the original number is divisible by three. It's not and it's not.
What are the multiples of 6 between 40 and 56?
The total number of integers that are multiples of both 42 and 56 is infinite. Here are the first few: 168, 336, 504, 672, 840 . . .
Relationship between total and marginal product?
Total product is the sum of all marginal products.
