How many ways can the letters in the word ORANGES be arranged if the 3 vowels must be together?
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Step-by-step explanation:
oranges has 3 vowels o,a,e; 4 vowels
treat 3 vowels as a single alphabet so o a e can be arranged in 3! ways
4 consonants can be arranged in 4! ways
no. of ways = 3!×4! = 6×24 = 144
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