18
16
18
18
18
16
6.8889
No.
300 divided by 18 equals 16 with a remainder of 12 or 16.67
288 divided by 18 equals 16.
5.3333
No. All three are not prime numbers. A prime number is a number that is only divisible by itself and 1. 15 can be divided by 1, 3, 5 and 15 16 can be divided by 1, 2, 4, 8 and 16 18 can be divided by 1, 2, 3, 6, 9 and 18.