Permutation and CombinationHard
Question
The number of ways to put five letters in five envelopes when any one letter is kept in right envelope and four letters in wrong envelopes are-
Options
A.40
B.45
C.30
D.70
More Permutation and Combination Questions
5 Questions are asked in a question paper. Out of which two questions can be solved by two- two methods, two question by...The number of words formed from letters of the word ′EAMCET′ so that no two vowels come together, is-...The total number of words formed with the letters of the word ″SERIES″ is-...How many dofferent nine digit numbers can be formed form the number 22 33 55 888 by rearranging its digis so that the od...How many numbers can be formed with the digits 3, 4, 5, 6, 7 which are greater than 1000 (Rept. not allowed) ?...