C = 44
Because 23 is a prime number, 21/23 is in its reduced form. You can make the fraction "un-reduced," so-to-speak, and multiply the numerator and the denominator by the same number. For example, multiply by 2/2 (which equals 1) so that the answer would be 42/46. 42/46 is an equivalent fraction to 21/23.
The prime number is 24
It is 37
21, 23, 25, 27, 29
21 23 25 27 29
The smallest number that both 21 and 23 can go into is 483.
21 22 23 24 which is the prime number
They are: 23 29 31 and 37 which makes four of them
23 is a prime number.
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
21 is composite.
If you meant to ask what are the prime numbers between 21 and 53 inclusive, then it would be 23, 29, 31, 37, 41, 43, 47, 53
23
19, 20, 21, 22, 23
21