Answer: The prime numbers that are less than 20 are: 2, 3, 5, 7, 11, 13, 17, and 19.
Step-by-step explanation: 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 po
