Answer:

2 and 17

Step-by-step explanation:

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Answer:

B. 17 why ?

Step-by-step explanation:

7 is a prime number because it has only one factor which is 17 x 1

why 16 and 18 are not prime ?

It's because it has two or more than factors

Does 2 a prime?

No , because 2 is a special number

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