Adam mixes the letters R, E, A, D, I, N, G, S, and A thoroughly. Without looking, Allen draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that Allen will not select a consonant?
9/5
9/4
4/9
5/9
There are 5 vowels (A, E, I, O, U) out of 9 total letters. So the probability of selecting a vowel is 5/9. Therefore, the probability of not selecting a consonant (i.e. selecting a vowel) is also 5/9.
But the answer choices are all mixed up or incorrect. The correct answer is:
Probability of not selecting a consonant = Probability of selecting a vowel = 5/9 = 0.555... = 55.56%