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04-06-2017
Mathematics

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Two letters are selcted at random from the word " IDEAS". What is the probability of selecting 2 vowels?

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Аноним Аноним

04-06-2017

number of ways to select 2 letters for the 4 letters in 'ideas' = 5C2 = (5*4)/2 = 10

Number of ways of selecting 2 vowels from the 3 vowels in this word = 3

so the answer to this is 3/10

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