Well, first you need to know the factors of 28..
1, 28
2, 14,
4, 7
Now add up the different factors, and see what you get.
1 + 28 = 29
2 + 14 = 16
7 + 4 = 11
so your answer, as shown in bold, is 7 and 4.
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27 28 29 30
The average of the two odd integers is 28. Therefore the two integers are 28-1 and 28+1, i.e 27 and 29.
First you need to find the prime factors of 28 and 42. 28= 7x22 42= 7x3x2 Then you multiply 7x3x22, the product of which is 84, which is your answer.
prime factors of 28= 2,7
To find the greatest common factor (GCF), first find the prime factorization of the two numbers. The GCF is the product of all of the prime factors the two numbers have in common. Prime factors of 28: 2, 2, 7 Prime factors of 68: 2, 2, 17 They have in common: 2, 2. 2x2=4 The GCF is 4.