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What is the fraction 16 20 in lowest terms?
Look for common factors in the two numbers. Divide both numbers by the common factors. Continue until there are no more common factors.
Do all square numbers have exactly 3 factors?
No. 81=9*9=3*27=1*81 81 has 5 factors and is a square number. 36=6*6=3*12=1*36=2*18=4*9 36 has 9 factors and is a square number. This doesn't mean that no square numbers have exactly 3 factors though, because: 9=3*3=1*9 9 has 3 factors and is a square number. 4=2*2=1*4 4 has 3 factors and is a square number. All square numbers have an odd number of factors though (because they have a whole number which multiplies by itself to get the number). Factors are whole numbers only, and not decimals. Hope this helps :)
What numbers go into 500 and 256?
That is incorrect. The common factors of 500 and 256 are 1, 2, 4.
What is relativly prime?
Relatively prime is when two numbers have no common factors other than 1. 9 and 4 are two such numbers: 9: 3 x 3 4: 2 x 2
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.
