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If two letters are taken at random from word STUPID, what is the probability that none of the letters would be vowels?

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If two letters are taken at random from word STUPID, what is the probability that none of the letters would be vowels?
posted Nov 28, 2018 by Yogeshwar Thakur

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1 Answer

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14/15


Number of ways of selecting 2 letters of word STUPID- 2*(5+4+3+2+1)=30
Number of ways selecting 2 vowels- 2 (UI & IU)
Probability- (30-2)/30=28/30= 14/15

answer Nov 28, 2018 by Hanifa Mammadov
12/15
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