1. Letter of the word INDIANOIL are arranged in all possible ways. The number of permutations in which A, I, O occur only at odd places, is : (a) 720 2. (b) 360 (c) 240 (d) 120 How many different words can be formed by jumbling the letters in the word MISSISSIPPI in which no two S are adjacent ? (a) (8) (C)('C) 3. 4. 5. (b) (8) (7)('C) (c) (6) (8)('C) (d) (7) (C)(C) The letters of the word COCHIN are permutated and all the permutations are arranged in an alphabetical order as in an English dictionary. The number of words that appear before COCHIN is : (a) 360 an an English dictionary. The ne (b) 192 (c) 96 r of word (d) 48 A man invites 6 non-vegetarian friends and 5 vegetarian friends for a dinner party. He arranges 6 nonvegetarian friends on one round table and 5 vegetarian friends along another round table. The number of ways this can be done is: (a) 11! (b) 9! (c) 2880 (d) 8280 m men and w women are to be seated in a row so that all women sit together. The number of ways in which they can be seated is : (a) (m + 1)! (b) m! w! (c) m! (w-1)! (d) (m + 1)! W!