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Q.

Consider the word MULTIPLE and let a, b, c respectively be the number of ways of arranging letters of the word MULTIPLE such that

i) order of the vowels is not changed

ii) Positions of each of the vowels is fixed

iii) relative order of vowels and consonants is not changed. Then

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a

a = 3360

b

b = 60

c

b = 84

d

c = 216

answer is A, C.

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Detailed Solution

a=8C3×5!2!=3360 (select 3 places for U,I,E and arrange remaining)

b=5!2! (U in 2nd place, I in 5th place and E in last place)

c=3!×5!2!=360

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Consider the word MULTIPLE and let a, b, c respectively be the number of ways of arranging letters of the word MULTIPLE such thati) order of the vowels is not changedii) Positions of each of the vowels is fixediii) relative order of vowels and consonants is not changed. Then