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visits member for 3 years, 6 months
seen Dec 16 '13 at 16:56

Apr
10
revised Permutation/Combination of x,y and z moves
A typo mistake fixed.
Apr
9
awarded  Student
Apr
9
comment Permutation/Combination of x,y and z moves
Thanks! Indeed it is a very good alternative.
Apr
9
awarded  Scholar
Apr
9
awarded  Editor
Apr
9
accepted Permutation/Combination of x,y and z moves
Apr
9
revised Permutation/Combination of x,y and z moves
added 33 characters in body; edited title
Apr
9
comment Permutation/Combination of x,y and z moves
Now I get it. I tried to approach it analogically starting with y, then z, and leaving x for the end. I got the same answer $\binom{13}{4} \binom{9}{7} = 25740$. Thank you!
Apr
9
asked Permutation/Combination of x,y and z moves