Which of the following numbers is a prime number
Note
97 is a prime number because it has no positive divisors other than 1 and itself; the other choices are divisible by smaller integers (91=7×13, 85=5×17, 51=3×17).
Which of the following numbers is a prime number
97 is a prime number because it has no positive divisors other than 1 and itself; the other choices are divisible by smaller integers (91=7×13, 85=5×17, 51=3×17).