ForumsThe Tavernwoody_7007s challenge of the week

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woody_7007
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woody_7007
2,662 posts
Peasant

I said at the end of the $100 billion question thread i would start a new one and here it is. I also said that i would put down new mathematical puzzles and things like that down. However i am going to change the format. I will put down any question i think people will find hard down as i am too lazy to think of maths puzzles but i mite put maths puzzles down if i hear a good one but anyway w/e here is the first new question. Same thing as last time whoever gives the right answer first wins. here is the first q

A secondary skl has an odd head teacher. On day 1, he has his kids perform a dodgy 1st day ceremony:

There are 1000 lockers and 1000 kids in the school. The head teacher asks the 1st kid to go to every locker and open it. Then he has the 2nd kid go to every 2nd locker and close it. The 3rd goes to every 3rd locker and, if it is shut, he opens it, and if it is open, he shuts it. The 4th kid does this to every 4th locker, and so on. After the process is completed with the 1000th kid, how many lockers are open?

Its tough. mite take u quite a wile.1st correct answer wins.

  • 27 Replies
florglee2
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florglee2
1,778 posts
Peasant

Holy crap that's confusing....

justgotpwned
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justgotpwned
1,166 posts
Peasant

Ummm is this even possible to do?

shermzx
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shermzx
564 posts
Nomad

999 lockers will be closed.

shermzx
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shermzx
564 posts
Nomad

wait.i think that in the end it will be in this format.

open close open close open close....am i right?

kevin44
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kevin44
1,775 posts
Jester

I did this in school a few years ago... it either goes odds are open, evens are closed, or odds are closed, evens are open.

woody_7007
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woody_7007
2,662 posts
Peasant

you are wrong kevin. It isnt that easy. It is much harder than that but it is still a logical answer not an impossible one. I will be interested to see if anyone can get the right answer.

Zega
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Zega
6,917 posts
Peasant

It must be 499 lockers that are open........

kevin44
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kevin44
1,775 posts
Jester

Well, maybe the one in my school was different, or I just can't remember it. Probably both.

skater_kid_who_pwns
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skater_kid_who_pwns
4,371 posts
Blacksmith

678? I guessed, that is really hard.

woody_7007
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woody_7007
2,662 posts
Peasant

yes kevin you probably cant remember it. Its quite a well known question/puzzle thingy And yes skater kid its very hard and you are wrong.

ManUtd4life096
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ManUtd4life096
1,359 posts
Farmer

500??????????????

MarkedTarget6
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MarkedTarget6
1,697 posts
Peasant

0? i have no idea...only if i wanted to go to school early wouldi rlly try to figure this out

bballdunker20
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bballdunker20
418 posts
Nomad

501?

SteelersFan735
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SteelersFan735
112 posts
Nomad

300 lockers are open?

99percentcomplete
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99percentcomplete
386 posts
Nomad

Is every square number open?

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