Least Common Multiple (LCM) for 40 4 is 40.
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The Least Common Multiple (LCM) for 40 24 is 120.
40 20,2 10,2,2 5,2,2,2
40, 80, 120, 160, 200, 240, 280, 320, 360, 400 . . .
From the rules of divisibility, we know that 40 is divisible by 1, 2, 4 and 5. Divide those numbers into 40 to get the rest. (40,1)(20,2)(10,4)(8,5)
The GCF of 42 and 60 is 6 More detail: One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The common factors are 1, 2, 3, and 6. Therefore, the greatest common factor is 6. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 42 are 2, 3, and 7. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 2 and 3, so the greatest common factor is 2 x 3 = 6. The greatest common factor of 60 and 42 is 6