SOLUTION: Consider the strings that consist of four lowercase letters and have the letter z in them. How many such strings are there? Assume we are using the English alphabet. I think so

Question 907466: Consider the strings that consist of four lowercase letters and have the letter z in
them. How many such strings are there? Assume we are using the English alphabet.
I think solution is 26^4-25^4
is this right anwser ?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
z***
*z**
**z*
***z
Can the * be another z? If so there are 26 possible choices.
If not then there are 25 possible choices.

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