Question 1008167
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{{{C[22]^4}}} = {{{(22*21*20*19)/(1*2*3*4)}}} = 7315.


This is the number of combinations of 22 objects taken 4 at a time.


See the lesson <A HREF=http://www.algebra.com/algebra/homework/Permutations/Introduction-to-Combinations-.lesson>Introduction to Combinations</A> in this site.