SOLUTION: The following problem refers to strings in A, B, ..., Z. How many four-letter strings are there that begin with L ?

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Question 1110669: The following problem refers to strings in A, B, ..., Z.
How many four-letter strings are there that begin with L ?
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.
Had this problem be formulated CORRECTLY, it would say if repetition is allowed or not. 

    English alphabet has 26 letters (we consider only capitals).


    So, if repetition  IS ALLOWED,  we have 26%5E3  four-letter  strings starting with L.


    If, on contrary, repetition  IS NOT ALLOWED, we have 25*24*23 four-letter strings starting with L.