How many three-letter codes can we make using only vowels, a, e, i, o, or u?

Question

asked Oct 28, 2019 228k views

2 Answers

Shashith Darshana · Answer 1 · 2019-11-02T06:29:40+0000

Answer and explanation:

Given : Vowels a,e,i,o or u.

To find : How many three-letter codes can we make using only vowels ?

Solution :

1) If we assume that repetition is allowed then

The three letter code can form

5* 5* 5=125 ways

Number of three-letter codes can we make using only vowels is 125.

2) If we assume that repetition is not allowed then

The three letter code can form

5* 4* 3=60 ways

Number of three-letter codes can we make using only vowels is 60.