5. Permutations and Combinations
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Use the Fundamental Counting Principle.
Use the Fundamental Counting Principle.
720
30
Value of n | Number of choices for nth letter |
---|---|
1 | 6 |
2 | 5 |
3 | 4 |
4 | 3 |
5 | 2 |
6 | 1 |
Number of permutations | 6* 5* 4* 3* 2* 1=720 |
Therefore, there are 720 ways we can arrange all of the letters in the word FAMILY.
6* 5 =30 Therefore, there are 30 ways we can arrange 2 of the letters in the word FAMILY.