3 Jan 2018: Daily MCQ

REFID: 26487

Two letters are randomly picked from the word GLOAT. Find the probability that at least one is a vowel.

Correct Answer: 7/10 

Solution 

Probability that at least one is a vowel  = 1 – Probability that none is a vowel

= 1 – 3C2/5C2

= 1 – 3/10

= 7/10

 

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