How many combinations are there in 21 numbers?

Answer 1

Oh, what a happy little question! To find the number of combinations in 21 numbers, we can use a formula called combinations. It's like mixing colors on your palette - each combination is unique and beautiful in its own way. So, for 21 numbers, the number of combinations would be calculated using the formula nCr = n! / r!(n-r)!. Just remember, there's no mistakes, just happy little accidents in math!

Answer 2

Well honey, there are 21 numbers, so the number of combinations would be 21 factorial, which is a whopping big number. But if you really wanna know, it's 21! (21 factorial), which is approximately 51.1 trillion. So good luck trying to wrap your head around all those possibilities!

Answer 3

To calculate the number of combinations in 21 numbers, you would use the formula for combinations, which is nCr = n! / (r!(n-r)!), where n is the total number of items and r is the number of items being chosen at a time. In this case, if you are choosing all 21 numbers at once, the number of combinations would be 21C21 = 21! / (21!(21-21)!) = 1. Therefore, there is only 1 combination when choosing all 21 numbers at once.

Answer 4

they are 21C2 combinations