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Q: How many combinations of numbers can be made of 20 numbers?

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There are 167960 combinations.

There are 38760 combinations.

There are 125970 combinations and I am not stupid enough to try and list them!

20

20

There are 45 combinations.

There are 167960 9 digits combinations between numbers 1 and 20.

There are 167960 9 digits combinations between the numbers 1 and 20.

There are 1140 five digit combinations between numbers 1 and 20.

How many combinations of five. Numbers could you get from 1 to 20

There are: 20C3 = 1140

There are 23C3 = 23!/(20!*3!) = 23*22*21/(3*2*1) = 1,771 combinations.

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