asked 173k views
3 votes
How many permutations are there of all the letters in each name?

1) 5040, 5040
2) 40320, 5040
3) 5040, 40320
4) 40320, 40320

asked
User Ptha
by
7.8k points

1 Answer

3 votes

Final answer:

To find the number of permutations of all the letters in a name, you multiply every whole number less than or equal to the number of letters down to 1 (factorial). For 7 letters, this is 7!, or 5040 permutations. For 8 letters, it's 8!, or 40320 permutations.

Step-by-step explanation:

The question is asking for the number of permutations of all the letters in each name. In mathematics, a permutation is an arrangement of items in a particular order. The number of permutations can be found using the factorial function, denoted by an exclamation point. For example, let's say a name has n distinct letters, then the number of different ways to arrange those letters would be n! (n factorial), which is n multiplied by every whole number less than it down to 1.

If a name contains 7 letters, then the number of permutations is 7!, which equals 5040. If a name has 8 letters, the permutations would be 8!, equating to 40320. Therefore, by calculating the factorials for names with 7 and 8 letters, we can determine the correct answer. Following this logic, if both names have 7 letters, the permutations for each would be 5040, and if one name has 7 letters and the other 8, the permutations would be 5040 and 40320, respectively.

answered
User Dan Harms
by
7.8k points
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