The following problem refers to strings in A, B, ..., Z.
How many four-letter strings are there that begin with A ?
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We have to make 3 choices, right? : the 2nd letter, the 3rd letter and the 4th letter. Each choice is independent, so we multiply them.
Number of choices for 2nd letter x Number of choices for 3rd letter x Number of choices for 4th letter
How many choices do we have for each letter?
Hello BangkokGarrett, basically its a total of the 3 choices, they are basically asking the total number of choices
I understand the question....I'm just trying to get you to fill in the blank.
We have 26 choices for each letter.
So the number of 4 letter strings that begin with A will be:
26 x 26 x 26