SOLUTION: Which of the following is/true? A.The prime factors of 20 are 4 and 5. B.The HCF of 12 and 20 is 2. C.The LCM of 2,10 and 14 is 70.

Algebra ->  Real-numbers -> SOLUTION: Which of the following is/true? A.The prime factors of 20 are 4 and 5. B.The HCF of 12 and 20 is 2. C.The LCM of 2,10 and 14 is 70.       Log On


   



Question 75469: Which of the following is/true?
A.The prime factors of 20 are 4 and 5.
B.The HCF of 12 and 20 is 2.
C.The LCM of 2,10 and 14 is 70.

Answer by 303795(602) About Me  (Show Source):
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A must be false as 4 is not a prime.
B must be false as 4 is a factor of both numbers and is greater than 2
C is true as the prime number factors of 2, 10 and 14 are 2, 5 and 7. 2*5*7=70