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pretorik |
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161 |
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markr |
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116 |
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Gordon Weir |
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104 |
4. |
mbloomfi |
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97 |
5. |
Dennis Nazarov |
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96 |
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zzz123 |
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72 |
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Srikanta |
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56 |
8. |
lidSpelunker |
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53 |
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SAMIH FAHMY |
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48 |
10. |
jkr |
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44 |
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denisR, mishik |
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236 |
2. |
alan, De_Bill |
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231 |
3. |
dddfff |
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228 |
4. |
kavfy |
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221 |
5. |
idler_ |
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106 |
6. |
akajobe |
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94 |
7. |
tolstyi |
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56 |
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STARuK |
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42 |
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vale |
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31 |
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xandr |
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11 |
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A Megamind walked along a fence and discovered strange pairs of numbers. First, he saw "188->4". A bit farther, he discovered"232->0". A few steps after that, "100->2". Then, "163->1". Then he saw a little boy who was just beginning to paint something. When the Megamind called the boy, he ran away. Approaching the site, the Megamind saw an incomplete pair "386->...". He took out his favorite marker and completed the pair. What number did he write? |
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Puzzle statistics "Numbers on the fence".
Last updated 6853324.1 minutes ago.
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Solved by: 20
Daily average: 0
Answers submitted: 22
Viewed by: 295
Fraction solved by: 6.7%
Solved at first attempt: 100%
Average discussion length: 1.0
Liked the puzzle: 9
Did not like the puzzle:
0
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Unusual purchase |
Logic puzzles |
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Weight: 2 |
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Liked the puzzle: 85% |
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14.01.2010 |
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Buyer: How much do you ask for one?
Seller: 20 roubles.
Buyer: How much for twelve?
Seller: That will go for 40 roubles.
Buyer: How about one hundred and twenty?
Seller: No problem, that would cost you 60 roubles.
What is the buyer asking for? |
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Puzzle statistics "Unusual purchase".
Last updated 6853324.1 minutes ago.
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Solved by: 38
Daily average: 0
Answers submitted: 41
Viewed by: 285
Fraction solved by: 13.3%
Solved at first attempt: 97.3%
Average discussion length: 1.0
Liked the puzzle: 6
Did not like the puzzle:
1
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Two cubes and labels |
Logic puzzles |
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Weight: 2 |
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Liked the puzzle: 91% |
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19.01.2010 |
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You have two cubes and sufficiently many labels with digits
0,1,2,..,9. You have to place one label on each face of each cube so
that you can describe any day of the month. The days 1,2 .., 9 should
be described as 01,02,...,09. |
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Puzzle statistics "Two cubes and labels".
Last updated 6853324.1 minutes ago.
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Solved by: 34
Daily average: 0
Answers submitted: 35
Viewed by: 283
Fraction solved by: 12%
Solved at first attempt: 94.1%
Average discussion length: 1.1
Liked the puzzle: 11
Did not like the puzzle:
1
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A bottle,a glass, a carafe, and a can contain milk, lemonade,
water, and coke. Water and milk are not in the bottle. The container
with lemonade is immediately between the carafe and the container with
coke. The can does not contain lemonade or water. The glass is next to
the can and the container with milk. The containers form a row. How
exactly are they arranged? |
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Puzzle statistics "Milk, lemonade, water, and coke".
Last updated 6853324.1 minutes ago.
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Solved by: 19
Daily average: 0
Answers submitted: 21
Viewed by: 259
Fraction solved by: 7.3%
Solved at first attempt: 78.9%
Average discussion length: 1.4
Liked the puzzle: 4
Did not like the puzzle:
0
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50 coins |
Logic puzzles |
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Weight: 3 |
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Liked the puzzle: 100% |
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27.12.2009 |
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Once upon a time, a tsar was holding a reception and the Megamind was
among the guests. The tsar decided to test how smart the Megamind was,
took him into a dark room, and gave the following task: On the table
in this room, there are 50 coins, exactly 10 of them are tails up. In
the darkness, it is impossible to determine the sides of these coins.
Touching the coins also does not help. The Megamind has to separate
these coins into two groups so that the number of tails in both are
equal. Can he do it? |
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Puzzle statistics "50 coins".
Last updated 6853324.1 minutes ago.
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Solved by: 22
Daily average: 0
Answers submitted: 30
Viewed by: 296
Fraction solved by: 7.4%
Solved at first attempt: 90.9%
Average discussion length: 1.2
Liked the puzzle: 8
Did not like the puzzle:
0
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A Megamind walked one mile South, one mile East, and one mile North,
after which he arrived at the starting point of his trip. Where on
planet Earth could such a trip take place? |
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Puzzle statistics "Walking the Earth".
Last updated 6853324.1 minutes ago.
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Solved by: 23
Daily average: 0
Answers submitted: 67
Viewed by: 296
Fraction solved by: 7.7%
Solved at first attempt: 34.7%
Average discussion length: 3.7
Liked the puzzle: 9
Did not like the puzzle:
1
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Among 101 coins, exactly 50 are counterfeit. A counterfeit coins
weighs one gram more or gram less than the real coin (counterfeit
coins may weigh differently). You have a balance scale that shows the
exact weight differential between the two cups. How can you
determine whether a given coin from this set is counterfeit using the
scale only once? |
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Puzzle statistics "101 coins".
Last updated 6853324.1 minutes ago.
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Solved by: 15
Daily average: 0
Answers submitted: 16
Viewed by: 293
Fraction solved by: 5.1%
Solved at first attempt: 100%
Average discussion length: 1.0
Liked the puzzle: 4
Did not like the puzzle:
0
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The set of numbers 1,3,8,120 has a remarkable property: the product of
any two numbers is a perfect square minus one. Find a fifth number
that could be added to the set preserving its property. |
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Puzzle statistics "The fifth number".
Last updated 6853324.1 minutes ago.
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Solved by: 37
Daily average: 0
Answers submitted: 41
Viewed by: 291
Fraction solved by: 12.7%
Solved at first attempt: 97.2%
Average discussion length: 1.1
Liked the puzzle: 11
Did not like the puzzle:
0
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What is the minimal number of weights required to be able to balance
all integer weights 1,2,...,40 on a balance scale?
Justify the minimality. |
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Puzzle statistics "Weights".
Last updated 6853324.1 minutes ago.
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Solved by: 9
Daily average: 0
Answers submitted: 17
Viewed by: 274
Fraction solved by: 3.2%
Solved at first attempt: 100%
Average discussion length: 1.0
Liked the puzzle: 2
Did not like the puzzle:
0
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A number pattern |
Logic puzzles |
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Weight: 3 |
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Liked the puzzle: 60% |
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05.03.2011 |
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What is next: 13 92 78 12 43 ... |
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Puzzle statistics "A number pattern".
Last updated 6853324.1 minutes ago.
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Solved by: 5
Daily average: 0
Answers submitted: 5
Viewed by: 47
Fraction solved by: 10.6%
Solved at first attempt: 100%
Average discussion length: 1.0
Liked the puzzle: 3
Did not like the puzzle:
2
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