# coins

genius
Posers and Puzzles 26 Mar '03 21:40
1. genius
Wayward Soul
26 Mar '03 21:40
a blind man is alone in a room with 100 coins. 90 are heads, 10 are tails. he cannot feel which ones are heads or tails. how can he get two piles of coins with an equal number of tails in each pile?
2. 27 Mar '03 11:26
What is a blind man doing in a room on his own? Is the door open or has he been locked in? 'Cos that contravenes health and safety regulations. If he can find an exit, he can just take all the coins and be well rich!
3. 30 Mar '03 20:59
good point
4. 30 Mar '03 21:511 edit
Originally posted by genius
a blind man is alone in a room with 100 coins. 90 are heads, 10 are tails. he cannot feel which ones are heads or tails. how can he get two piles of coins with an equal number of tails in each pile?
split it 50/50 because coins have a head on 1 side and tails on the otherπ
5. 31 Mar '03 06:24
Originally posted by genius
a blind man is alone in a room with 100 coins. 90 are heads, 10 are tails. he cannot feel which ones are heads or tails. how can he get two piles of coins with an equal number of tails in each pile?
Turn 10 coins. Then create two piles of ten coins.

I think !!! π

6. genius
Wayward Soul
01 Apr '03 21:18
Originally posted by trekkie
Turn 10 coins. Then create two piles of ten coins.

I think !!! π

he could still make a pile of 10 heads and 10 tails though...
7. 03 Apr '03 11:20
It is only possible if he has two piles of no coins
8. genius
Wayward Soul
03 Apr '03 21:16
Originally posted by Mock True
It is only possible if he has two piles of no coins
no-it is perfectly poissible. if you want i can post the answer...it's one of these problems that you either see it at first, or usually don't see it...and trekkie-u are almost there!...
9. Acolyte
04 Apr '03 08:12
Originally posted by genius
no-it is perfectly poissible. if you want i can post the answer...it's one of these problems that you either see it at first, or usually don't see it...and trekkie-u are almost there!...
Haven't you already posted a very similar puzzle? Anyway, the answer is he spilts the coins 90/10 and turns over the coins in the smaller pile.
10. genius
Wayward Soul
04 Apr '03 16:40
Originally posted by Acolyte
Haven't you already posted a very similar puzzle? Anyway, the answer is he spilts the coins 90/10 and turns over the coins in the smaller pile.
yeah-that's right. i wasn't sure if i'd posted it before, so i posted it anyway π i probubly did...
11. 06 Apr '03 17:54
D'oh!!!
12. genius
Wayward Soul
08 Apr '03 16:40
Originally posted by genius
yeah-that's right. i wasn't sure if i'd posted it before, so i posted it anyway π i probubly did...