# IIT JEE Questions And Answers :: Permutations Combinations: part1

IIT JEE : Permutations Combinations QUESTIONS AND ANSWERS :: part1 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2014 examinations :

 16.If the permutations of A,B,C,D,E taken all together be written down in alphabetical order as in dictionary and numbered, then the rank of the permutation DEBAC is 90 91 92 93 ANSWER : : 93
 17.Six points in a plane be joined in all possible ways by indefinite straight lines and if no two of them be coincident or parallel and no three pass through the same point(with the exceptions of the original 6).The number of distinct points of intersection is equal to 105 45 51 None of these ANSWER : : 51
 18.Out of 8 sailors on a boat, 3 can work only on one side and 2 only on the other side. The number of ways the sailors can be arranged on the boat is 1700 1720 1728 1736 ANSWER : : 1728
 19.An n-digit number is a positive number with exactly n digits. Nine hundred distinct n-digit numbers are to be formed using only the three digits 2,5 and 7.The smallest value of N for which this is possible is 6 7 8 9 ANSWER : : 7
 20.In an examination, there are three multiple choice questions and each question has 4 choices. Number of sequences in which student can fail to get all answers correct is 11 15 80 63 ANSWER : : 63

More Permutations Combinations QUESTIONS AND ANSWERS available in next pages

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