permutations
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| How to arrive at the expression nCk for 'selection of k objects from n objects' using the counting principle? |
|
0 | 1218 | July 14, 2016 |
| Explaining Choosing and Arranging objects in simple English? |
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0 | 1030 | July 4, 2016 |