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How many combinations of 10 numbers are possible from 20 numbers?

Need some help!!!!

In a lottery where you have 20 numbers.

how many 10 number combinations are possible from 20 numbers?

how many 9 number combinations are possible from 20 numbers?

how many 8 number combinations are possible from 20 numbers?

how many 7 number combinations are possible from 20 numbers?

how many 6 number combinations are possible from 20 numbers?

Is there a formula that can be used allowing a choice of Total numbers and allowing a choice of various combinations?
Entry #7

Comments

Avatar RJOh -
#1

combo of / in 20 numbers
10=184,746
9=167,960
8=125,970
7=77,520
6=38,760
5=15,504
You can use any odd calculator.
Avatar johnph77 -
#2
http://www.johnph77.com/math/lo.html
http://www.johnph77.com/math/kenocomp.html

This may help. No ads, nothing to sell, for informational purposes only.

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