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

Question

asked Feb 17, 2019 123k views

2 Answers

Fleur · Answer 1 · 2019-02-20T22:52:38+0000

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