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No, 28 is not a common factor of 7 and 2. Factors of a number are integers that can be multiplied together to get that number. In this case, the factors of 7 are 1 and 7, and the factors of 2 are 1 and 2. Since 28 is not a factor of either 7 or 2, it is not a common factor of the two numbers.
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Highest common factor of 196 and 420?
196 = 2 x 2 x 7 x 7; 420 = 2 x 2 x 3 x 5 x 7. Common factors 2 x 2 x 7 ie 28 is the HCF.
What is the Highest common factor of 28 and 68?
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.
What is the ratio of 28 and 8 in simplest form?
28:8 :: 7:2 ;; 3.5:1 NB note the use of colons, instead of writing out 'ratio to' all the time.
What is the GCF of 28 42 70?
The factors of 28 are:1, 2, 4, 7, 14, 28The factors of 42 are:1, 2, 3, 6, 7, 14, 21, 42The factors of 70 are:1, 2, 5, 7, 10, 14, 35, 70The common factors are:1, 2, 7, 14The Greatest Common Factor (GCF) is: 14
Factor 7x to the 2nd power minus 28?
7(x - 2)(x + 2)
