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A Prime number has no factors other than 1 and itself. Each multiple of fifteen includes 3, 5, and 15 among its factors.
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Earn +20 ptsQ: Why cant a multiple of 15 be a prime number?
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What number is prime and between 15 and 25 and has 57 as a multiple?
It is 19
Is 15 a prime number why or why not?
No... Every whole number that ends with a 5 includes 5 as a factor (is a multiple of 5).
Is 15 a prime number of 45?
15 is a factor of 45, but it is not a prime number.
Is 2 and 15 prime or composite?
2 is a prime number and 15 is a composite number.
Least common multiple of 15 25 and 30?
Prime factor each number. Use each prime factor the most it was used in any one number. 15=3x5 25=5x5 30=2x3x5 2x3x5x5=150
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