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Q: How many 6 digit combinations are there in 20 numbers?

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

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 5 digit combinations from 1 to 20. 20 combination 3 computes that.

There are 167960 combinations.

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

4+4+4+4+4= 20

Twenty factorial which is denoted by "20!". 20! = 1x2x3x4x5x6x7x8x...x19x20

There are 45 combinations.

I am assuming you mean 3-number combinations rather than 3 digit combinations. Otherwise you have to treat 21 as a 2-digit number and equate it to 1-and-2. There are 21C3 combinations = 21*20*19/(3*2*1) = 7980 combinations.

20 There can be two answers to this: I'll assume this is what you meant-> let's say you mean like pairing the numbers 1-5 with the numbers 6-9. 5*4=20

There are 45 of them.

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