the letters of the word EQUATION? (ii) How many different five letter words starting with a vowel can be formed from the letters of the word EQUATION?
Answers
Answered by
0
Answer:
The first letter can be any one of the five vowels.
Assuming that repetition is not allowed, and assuming ‘word’ means combination of letters (with or without meaning), the second letter can be any one of the seven remaining letters (excluding the first letter chosen)
The third letter can be one of the six remaining letters.
The fourth letter can be one of the five remaining letters.
This means there are four options for the fifth and last letter.
The total is therefore: 5 x 7 x 6 x 5 x 4 = 4200 options.
If repetition is allowed: 5 x 8 x 8 x 8 x 8 = 20480 options.
Similar questions