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3. In how many ways can the letters
in "MATH IS FUN" be arranged if the
first and the last letter must be
vowels?​


Sagot :

Answer:

Having chosen the first and last letters, you can arrange the remaining 7 letters in 7!= 5040 ways. So there are 6*5040=30240 possible arrangements of the nine letters of « MATH IS FUN » starting and ending with a vowel.