Use the rule of divisibility : 60 is composite because it is even so it can be divided by 2 67 is prime because none if the divisiblility rules work on it 65 is composite because it has a 5 by the end which means it can be divided by 5 <span>63 is composite because the sum of the digits equal to 9 which can be divided by 3 and 9</span>
