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Q: Which is prime 7 9 5 17?

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5, 11 and 17 are prime number but 9 and 27 are composite numbers

2, 5 and 7

2, 3, 5, 7, 9 * * * * * 9 is not a prime. The fifth prime is 11.

5, 13 and 17 are prime.

5 yes 7 yes 9 no = 3 x 3

They are 7 and 17 because they have only two factors

5 and 7 are prime numbers. and 3 goes into 9, so the only number that goes into 5, 7, and 9 is 1. They are what we call "relatively prime", even though 9 is not prime, because they have no common factors other than 1.

As 315 is ending with a 5 it can be divided by 5 315/5=63 As 6+3=9 then it can be divided by 9 63/9=7 7 is a prime number Then 315 = 32 x 5 x 7

Prime numbers from 1 to 9 are: 2 3 5 and 7

6+9+7-5=17 that is the answer

The first 8 prime numbers are: 2 3 5 7 11 13 17 and 19 The median is: (7+11)/2 = 9

No, it can be divided by 3, 7, 9, 17, and 21.

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