Quantitative Aptitude 23. Permutations and Combinations PART-A Model 1 1. In how many different ways can 5 persons stand in a row for a photograph? 1) 100 2) 120 3) 50 4) 5 5) None of these 2. How many different words can be formed using the letters of the word ‘BANKER’? 1) 120 2) 6 3) 720 4) 12 5) None of these 3. In how many ways can the letters of the word COMPUTER be arranged? 1) 6! 2) 7! 3) 8! 4) 5040 5) None of these 4. How many different 4 digit numbers can be formed using the digits 1, 2,3,6,7 and 9? 1) 120 2) 24 3) 720 4) 360 5) None of these Model 2 5. How many different words can be formed using the letters of the words (i) MIRROR (ii) BANANA (iii) SUCCESSFUL 1) 120, 60, 151200 2) 6!, 6!, 10! 3) 4!, 3!, 6! 4) 120, 120, 360 5) None of these 6. A set of 12 books has 3 identical Quant books, 3 identical Reasoning books, 4 identical English books and 2 different books on General Awareness. In h...