hello amey,

THERE ARE EIGHT WORDS COME IN WORD ORIENTAL with four vowels (o,i,e and a). bunch up the four vowels to be considered as a single letter. the total arrangements of the letters in the word oriental with the vowel always together is 20*24 equal 2880. Put the vowels together and then note that they are all distinct, so there are 4! ways to arrange them as a group. Then consider the group of vowels as a single letter, I’ll call it V, and then consider what letters remain: RNTLV. Each of these is distinct, so there are 5! ways to arrange these. So all told, there are 4!5!=24*120=2,880 total arrangements.

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all the best..