b) The 7 letters of the word EWALLET are written on 7 cards. ) Calculate the number of ways of arranging all 7 letters of the word EWALLET where the first and last letters must be vowels? (i) Calculate the number of different arrangements for the 7 cards in a single row if 2 le must be together but not next to the letter 'A'. (iii) A card with "L' written on it was removed. How many different selections of 4 cards can be made from the 6 cards if the 4 letters inelude exactly one L and at least one E? tters 'E

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