Answer:
24.
Step-by-step explanation:
We can use the factorial function to find the number of unique arrangements in a word.
There are 4 unique characters in 'OPAL'. As such, 4! = 24.
In the case that there were repeating characters, such as 'OPALA', then we would divide by the factorial of the number of repeating letters. That looks something like this:

Hope this helped.
I think the wrong is the answer , I hope that help , good luck
Answer:
1/4 is ur answer :)
Step-by-step explanation:
Hoped It Helped
0ne and one fifth or 1 and 1/5