Total Possible Combinations Calculator How Do You Calculate How Many Possible Combinations Of X Different Numbers Out Of Y Total Numbers: No Order?

How do you calculate how many possible combinations of x different numbers out of y total numbers: no order? - total possible combinations calculator

such as the numbers 0-37, if I wanted that all possible combinations of 4, not repeated in different orders, how can I calculate? For example, a combination 4-3-3-7. 4-3-7-3 and are considered a combination, because they all have the same numbers. Is there an online calculator, I could not find. In addition, a program that would give me all these combinations, in particular.