Question

in the room there are 17 lockers in a row , each has a door that you can open to see inside and a door to the adjacent locker.If you open a locker and find the gift you can keep it else it will automatically move to the adjacent locker.Can he find his gift . What is the minimum number of attempts required

Answer 1

yes 16 attempts hope its correct

Answer 2

Number of attempts required is 16 attempts and he will get gift as explained.

To find:

His gift and the minimum number of attempts required

Given:  

17 lockers in a row  

Solution:

There are 17 lockers in a row. Hence, there are 16 chances that he will get gift inside the locker and the number of attempts required will be 16 attempts as it is given that the gift will automatically move to the adjacent locker and after the 16th attempt, he will definitely get the gift in the 17th locker if he does not get gift in all previous attempts.

Hence, number of attempts required is 16 attempts and he will get gift.