The set of prime numbers less than 20 = {2, 3, 5, 7, 11, 13, 17,19}
20 and 40
There are actually 8 prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
2 5 6
Three of them.
The set of prime numbers less than 20 = {2, 3, 5, 7, 11, 13, 17,19}
9 and 15 are the only two odd composite numbers less than twenty.
20 and 40
23 and 29
2
There are actually 8 prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
The numbers 1, 2, 3, ... , 18, 19.
2 5 6
2 and 4
The prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19.
The positive even numbers less than 20 are: 2, 4, 6, 8, 10, 12, 14, 16, 18
2 1