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Combos

Amazing Grace's avatar - lion
Amazing Grace

if there is 6 diff combos for a 3 digit number all diff digits
then how many for 4
how many for 5
how many for 6
only 3 digit combos
only using 4 5 or 6 diff digits but no 2 being the same

123=6
1234=
12345=
123456=

time*treat's avatar - radar
time*treat

3p3 = 6 : p = permutations

4p3 = 24

5p3 = 60

6p3 = 120




Amazing Grace's avatar - lion
Amazing Grace

Then

1234567=
12345678=
123456789=
12345678910=720

hypersoniq's avatar - binary
hypersoniq

http://mathforum.org/dr.math/faq/faq.comb.perm.html

shows how to calculate both permutatons and combinations...

RJOh's avatar - chipmunk
RJOh

Then

1234567=210
12345678=336
123456789=504
12345678910=720

If you use the old Maybells QuickWheel program, you get the answers and a list of the combinations.

 

Amazing Grace's avatar - lion
Amazing Grace

Tks checked out just what i was looking for!

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