Joe wants to find all the four-letter words that begin and end with the same letter. How many combinations of letters satisfy this property?
There is 26 ways to choose the first/last numbers. Then, there are 26 ways to find the second and third letter. Finally, there is 1 way to choose the last number. Multiplying all these numbers, we get 17576 combinations of letters.
- Daisy
+847 
