Q: Is 11 a prime number a triangular number or a multiple of 7?

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A multiple of 11 can't be a prime number.

Only one: the number 11. Any higher multiple of 11 can't be a prime number, now can it.

13 is a prime number in that range. So are 11, 17 and 19.

no because if it was a prime number 2,4,6,8,10,12 ect. It would be a multiple of 2,4,6,8,10,12 ectr.

yes.

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A multiple of 11 can't be a prime number.

Only one: the number 11. Any higher multiple of 11 can't be a prime number, now can it.

As 77 = 7 x 11, any number that is not a multiple of 7 or 11 is relatively prime to 77, e.g. 25, 38, 123

13 is a prime number in that range. So are 11, 17 and 19.

no because if it was a prime number 2,4,6,8,10,12 ect. It would be a multiple of 2,4,6,8,10,12 ectr.

1155 is obviously a multiple of 5 and a multiple of 11, so it is a composite number.

Yes, the only factors of 11 are 1 and 11.It is prime.

yes.

It's a Prime number

No 10 is though

11 is a prime number. Its only prime factor is 11.

11 is prime.