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#1 2016-10-08 08:13:09
Mathematics Quiz Question.
Mathematics Quizzes Mathematics
Question:
Sean claims that every number is either prime or the product of two primes. Which number could Vickie use to disprove Sean's statement?
Option A):
2
Option B):
10
Option C):
18
Option D):
15
Option E):
57
Correct Answer is Option C):
18
Explanation:
The number 2 is prime, and 10 = 2 5, 15 = 3 5, and 57 = 3 19. Each of these numbers is the product of two primes. But 18 = 2 9 or 3 6, and neither 9 nor 6 is prime.
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