Difference between revisions of "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?"
(Created page with "There are <math>26</math> choices for the first letter, <math>26</math> for the second, and <math>26</math> for the third. The last letter is determined by the first letter. T...") |
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Latest revision as of 17:12, 12 June 2022
There are 
choices for the first letter, for the second, and for the third. The last letter is determined by the first letter. Thus, there are 
such combinations.
