Which of the following numbers is prime?671215
the answer is 7, because you cannot multiply any number besides itself and 1 to equal 7.
7 is the prime number.
A prime number is something that nothing can be multiplied.
3x2 = 6
6x2=12
3x5 = 15
7x1 = 7
So your correct answer is 7.
Hope I was able to help!
