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

IIT JEE : Permutations Combinations QUESTIONS AND ANSWERS :: part1 : 26 to 30

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

 26.If ? denotes the number of permutations of x+2 things taken all at a time the number of permutation of x things taken 11 at a time and c the number of permutations of x-11 things taken all at a time such that a=182 bc, then the value of x is 15 12 10 18 ANSWER : : 12
 27.The total number of 9 digit numbers which have all different digits is 10 ! 9 ! 9 . 9 ! 10 . 10 ! ANSWER : : 9 . 9 !
 28.The number of 3 digits numbers lying between 100 and 999 inclusive and having only two consecutive digits identical is 100 162 150 None of these ANSWER : : 162
 29.How many different nine digit numbers can be formed from the number 223355888 by rearranging its digits so that odd digits occupy even positions? 16 36 60 180 ANSWER : : 60

More Permutations Combinations QUESTIONS AND ANSWERS available in next pages

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