100 closed lockers. You begin by opening all 100 lockers. Next, you close every second locker. Then you go to every third locker and close it if it is open or open it if it is closed (call this toggling the locker). After your 100th pass of the hallway, in which you toggle only locker number 100, how many lockers are open?
|V| U R @ |_ I ‘s Blog
In this blog u can see lotz of brain teasers , puzzles , code snippets , . . . and so on
Cluster M@p$
Feedj!t
|V| U R @ |_ I 's Blog 
All those numbers from 1- 100, that have even number factors will be closed and those with odd number of factors will be open.
And since only squares have odd number of factors,
all the squares will be open i.e.1,4, 9, 16, 25,36,49,64,81,100
Well done Aadya.. u r r8…
Try 2 solve more prblms…
Thnx….
hmm.. solved again huh???
u ans is r8…
Perfect answer..
I think my qns r not upto ur xpectations….
you’re actually a excellent webmaster. The site loading pace is amazing. It sort of feels that you’re doing
any unique trick. Moreover, The contents are masterwork.
you’ve performed a wonderful task in this subject!
Hey, The template of this webpage comes with the WordPress themes. I didn’t develop this webpage.
I just post my content buddy.
Keep reading 🙂
cheers!