Question

You want to make five-letter codes that use the letters A, F, E, R, and M without repeating any letter. What is the probability that a randomly chosen code starts with A?

Answer 1

`24/120=1/5=0.2=20%`

Explanation:

Total number of possible 5 letter codes with these letters may be found from the multiplication principles as `5! =120`.

Total possible number of such codes starting with `A` is hence also given by the multiplication principle as`1xx4xx3xx2xx1=24`.

Hence the probability that a randomly chosen code starts with `A` is `24/120=1/5=0.2=20%`.