Search found 3 matches
- by learnitboy
Wed Jul 15, 2009 11:07 am- Forum: Problem Solving
- Topic: What is this?
- Replies: 4
- Views: 1408
The second answer can also be read as 26C17*!17. This is same as 26P17. The theme of both the answers is same. First select the number of letters from the given set in whatever ways they can be selected (5C4*21C13 or 26C17) and then arrange them (!17 ways for 17 letters of either question). We multi...
- by learnitboy
Tue Jul 07, 2009 1:23 am- Forum: Problem Solving
- Topic: Permutation Combination Problem
- Replies: 13
- Views: 2019
- by learnitboy
Mon Jul 06, 2009 10:11 am- Forum: Problem Solving
- Topic: Exponent Problem
- Replies: 3
- Views: 1181