Question

http://openstudy.com/study#/updates/50339239e4b0d8ed9b49bd9c

Answer 1

its my previous ques wihich i closed accidently..

Answer 2

the ques was
In a jail with 100 rooms, all locked initially, 100 rioters
break in and disturb the rooms in the following way. First
one stops at all rooms and opens them all. Second rioters
stops at rooms numbered 2, 4, 6, . . . and locks open rooms,
and leaving the other rooms as they were. The third rioter stops at rooms numbered 3, 6, 9, . . . and again opens a
locked room and locks an open room, leaving others undisturbed. And this process continues. After all the 100 rioters
have left which rooms would be open?

Answer 3

I hope u got your solution

Answer 4

i just wanted to discuss there so i attached the link..

Answer 5

why sq. nos have odd no. of factors i got it..
but why only sq nos. fit in the soln i didnt get it..

Answer 6

its because the room number which has odd number of factors...... will be open

Answer 7

u didnt understand that?

Answer 8

leme try..
1o all
2,4,6....c
3,6,9....o
.
.
.
no i didnt get it! :P
i mean the reason..

Answer 9

Ok....... the rooms are intially closed right

Answer 10

So,