How many unique ways are there to arrange the letters in the word error

20

Step-by-step explanation:

The number of ways to arrange n things in which a things are identical , b things are identical and so on...... is given by :-

Given Word : ERROR

Total letters = 5

Here letter R is repeated 3 times.

Then, the number of  unique ways to arrange the letters in the word "ERROR " will be :-

Hence, the number of  unique ways to arrange the letters in the word "ERROR "=20

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.