Q.
At random all the letters of the word "Article" are arranged in all possible ways. The probability that the arrangement begins with vowel and ends with a consonant is
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a
17
b
27
c
37
d
47
answer is B.
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Detailed Solution
The number of letters in the word ARTICLE is 7Hence, the number of ways of arranging the letters among themselves without any restriction is 7!Therefore, n(S) = 7! The number of vowels is 3, and the number of consonants is 4 suppose that E be the event of getting words which starts with vowel and ends with consonants n(E) = 3C1× 4C1× 5!P(E) = 3×4×5!7! = 27The probability that the arrangement begins with vowel and ends with a consonant is 27
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