How many possible arrangements are there in the letters of the word Fred

24

Step-by-step explanation:

Basically, the first thing you do is figure out how many letter are in the word FRED.

There are 4 letters

Now, you need to make a multiplication expression

To do this, you start with how ever many letters you have, FOUR

Then the rest of the numbers are counting down from there.

Hence: 4*3*2*1=24