20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40
The prime numbers between twenty and forty are: 23 29 31 37.
Twenty is composite. It has the factors 1, 2, 4 ,5, 10, and 20. Prime numbers have exactly two factors. Composite numbers have three or more.
All even numbers greater than two are composite.
they ARE two numbers
Two is prime. All other even numbers are composite.
240.25
Five.
9 and 15 are the only two odd composite numbers less than twenty.
Both are prime numbers
twenty five
one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty one twenty two twenty three twenty four twenty six twenty seven twenty eight twenty nine thirty thirty one thirty two thirty three thirty four thirty five thirty six thirty seven thirty eight thirty nine forty forty one forty two forty three forty four forty five forty six forty seven forty eight forty nine fifty
Forty nine is composite.