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# Someone please help me ?

A letter of the alphabet is selected at random . Find the probability that the letter is a :

a) vowel ( exclude y )

b) consonant (include y)

### 3 Answers

- ?Lv 73 months agoFavorite Answer
The vowels are A,E,I,O and U. That means you have a probability of 5/26 of selecting a vowel at random, because there are 26 letters in the alphabet.

That means there is a 21/26 probability of selecting a consonant.

Think of probability in relation to a coin. A coin has one side head and one side tails. There are only two choices, so the chance of flipping the coin and it landing on heads is 1/2. 1 head out of two choices. In the alphabet, there are 26 letters you can draw. There is only 1 letter A, so the probability of selecting A when all the letters are put in a bucket is 1 in 26, or 1/26. Five of the letters are vowels, so there is a 5/26 chance of drawing a vowel.

- The GnosticLv 73 months ago
Seriously?

a) 5 vowels, 26 letters, probability ≈ 19.23%

b) consonant = not vowel = 1 - 19.23% = 80.77%