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

27.The total number of 9 digit numbers which have all different digits is

10 !
9 !
9 . 9 !
10 . 10 !

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

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

More Permutations Combinations QUESTIONS AND ANSWERS available in next pages

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