Question
Five friends (A, B, C, D, and E) are sitting in a
straight line all facing north. A is sitting to the immediate right of B. C is sitting to the immediate left of D. E is not sitting at any end. Who is sitting in the middle?Solution
A is sitting to the immediate right of B. ____ ____ ____ B  A …. (I) B A ____ ____ ____ …….. (II) C is sitting to the immediate left of D. E is not sitting at any end. C   D E B  A …. (I) B A E C D …….. (II) In both the cases E is sitting in the middle.
A committee of 4 members is to be formed from 5 men and 4 women such that at least one woman is included. In how many ways can this be done?
In how many different ways can the letters of the word 'REMAINING' be arranged?
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "CAMPFIRE"?
A group consists of 9 boys and 7 girls. In how many ways can 4 boys and 3 girls be selected from the group?
How many different nine digit numbers can be formed from the number 66 55 99 222 by rearranging its digits so that the odd digits occupy even positions...
Out of 6 men and 3 women a committee of 3 members is to be formed so that it has 2 men and 1 woman. In how many different ways can this be done?
- Seven children are to be seated for a group photo. Three are cousins and should not sit together. In how many ways can this be done?
In how ways can the selection be made so that a particular member is always excluded?
...There are 14 candidates for 5 post. In how many different ways can be post be filled?
In how many ways can the letters of the word ENGINEERING be arranged?
Relevant for Exams:
