Difference between revisions of "User:Saul/algebra"
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=== Combinations/Choose === | === Combinations/Choose === | ||
A combination is a sequence where the order does NOT matter.<br> | A combination is a sequence where the order does NOT matter.<br> | ||
− | This is often notated by '''n choose r''' - | + | This is often notated by '''n choose r''' - '''n''' and '''r''' mean the same thing as in pick. |
Revision as of 02:59, 25 September 2019
Combinations and Permutations
Permutations/Pick
A permutation is a sequence where the order does matter.
This is often notated by n pick r where n is the data set - say 40 lotto balls and r is the selection count - say 8 balls.
Combinations/Choose
A combination is a sequence where the order does NOT matter.
This is often notated by n choose r - n and r mean the same thing as in pick.