Question

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

Answer 1

They can be arranged 120 different ways

Answer 2

Answer: 20

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 :-

`(n!)/(a!b!......)`

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 :-

`(5!)/(3!)=(5*4*3!)/(3!)=20`

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