Funny Puzzle
A professional college has a strange principal. On the first day, he & his students perform an odd opening day ceremony:
There are one thousand lockers and one thousand students in the college.
The principal asks the first student to go to every locker and open it.
Then he has the second student go to every second locker and close it.
The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it.
The fourth student does this to every fourth locker, and so on.
Then, the Question.....
After the process is completed with the thousand students, how many lockers are open?
There are one thousand lockers and one thousand students in the college.
The principal asks the first student to go to every locker and open it.
Then he has the second student go to every second locker and close it.
The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it.
The fourth student does this to every fourth locker, and so on.
Then, the Question.....
After the process is completed with the thousand students, how many lockers are open?
Replies
-
bharathpbFinnaly you get a principal r@gg!ng studetns...
-
Somii have a guess!! 898???
-
rishi0922Hey bharathpb how you thought this type of answer, this a tricky question guy not the question to make a fool.
And by the way principal dosen't take ragging. -
rishi0922And somi try it again.
-
bharatbhushan198is 500 correct?
-
silverscorpionOnly the lockers numbered
1,4,9,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400,441,484,529,576,625,676,729,784,841,900,961
will be open.
These are the square numbers, and only those will be open at the end. U can check..
So, there will be 31 lockers open finally.. -
rishi0922yes silverscorpion you are right.
-
vinsocorpIts gr8 question to solve..
-
marustechi dont get .....so i need answer pls
You are reading an archived discussion.
Related Posts
Tell the smallest integer which can be written with two digit......../
find the tenth number in this series
3, 3, 5, 4, 4, 3, 5, 5, 4, ?
Hey!!would you be kind enough and spend a little bit of your precious time and tell me what kind of jobs are there for electronics freshers??.....I want to know what...
hi..........friends
i need some mini project topics
very urgently so pls help me😕
Facebook will finally reach the impressive 500 million user milestone sometime this coming week. To celebrate, it’ll launch “Facebook Stories,” a visual memorial to all the ways the social network...