Question

44: Five persons play with their car keys such that after the game none leaves with his
own key and everybody has exactly one key. It is not possible for all five of them to meet at one
place again. If the probability that they can still have their right key back assuming each one of
them meets one or more friends at most once is P, then
11P
is equal to _____.

Answer 1

Answer:

1. Permutation and Combination Basics

2. The Dreaded Combinatorics

3. Circular Arrangements

4. Linear Arrangement Constraints - Part I

5. Linear Arrangement Constraints - Part II

6. Circular Arrangement Constraints - Part I

7. Circular Arrangement Constraints – Part II

8. Considering Combinations

9. Combinations with Constraints

10. Using Combinations to Make Groups

11. Tackling the Beasts Together

12. Unfair Distributions in Combinatorics - Part I

13. Unfair Distributions in Combinatorics - Part II

14. How to Solve Combinatorics Questions on the GMAT

15. When Permutations & Combinations and Data Sufficiency Come Together on the GMAT!

16. Other Resources on Combinatorics

17. Should You Use the Permutation or Combination Formula?

18. Permutation Involving Sum of Digits

19. Easy Logic to a Difficult Combinatorics GMAT Question!

Step-by-step explanation: