Question

Four students each made a list of prime number. Eric:5,7,17,23)Maya:3,5,13,17)Bella:2,3,17,19(Jordan:7,11,13,21. Who made an error and includes composite numbers from his or hers list

Answer 1

Jordan made the mistake. 21 is a composite number because it was another pair of numbers that equals 21 .

Answer 2

Jordan made an error because 21 isn’t a prime number, it is a composite number because it can be divided by more than one number except one . It can be divided by 1,3 and 7.