1.

The letters of the word ‘CLIFTON’ are placed at random in a row. What is the chance that two vowels come together?

Answer»

given: word “CLIFTON”

Formula: P(E) = \(\frac{favorable\ outcomes}{total\ possible\ outcomes}\) 

In the random arrangement of the alphabets of word “CLIFTON” we have to find the probability that vowels come together 

total possible outcomes of arranging the alphabets are 7! 

therefore n(S)=7! 

let E be the event that vowels come together 

number of vowels in SOCIAL is I, O 

therefore, number of ways to arrange them so (I, O) come together 

n(E)= 6! × 2!

P(E) = \(\frac{n(E)}{n(S)}\)

P(E) = \(\frac{6!2!}{7!}\) = \(\frac{2}{7}\) 



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