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Earn +20 ptsQ: Find the sum of the prime factors of 28?
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What is the sum of the distinct prime factors OF 12?
28.
Find the sum and product of the first five prime numbers?
2 3 5 7 11 Sum: 28 Product: 2310
Is 28 prime?
No its 6 factors are 1,2,4,7,14,and 28.
What is the GCF of 28 20 and 40?
To find the GCF, you first need to break the numbers down into their prime factors: 28 = 2x2x7 20 = 2x2x5 40 = 2x2x2x5 The next step is to find any common prime factors. In this case, all three numbers have two 2s as prime factors. Multiply these and you get 4. Therefore the GCF of 28, 20 and 40 is 4.
What is the sum of all the factors of 12?
28
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