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# rookie1ja

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### #184Matchstick Equations

Posted by on 31 March 2007 - 11:29 PM

Matchstick Equations - Back to the Matchstick Puzzles
Try to rectify a mistake by moving a single matchstick, to get the correct equation.
(Edit: you can not place any matchstick diagonally over the equals sign)

The following equation is made of 11 matches:
XI - V = IV (more solutions)

The following equation is made of 11 matches:
X + V = IV (more solutions)

The following equation is made of 10 matches:
L + L = L (more solutions)

The following equation is made of 12 matches:
VI = IV - III (more solutions)

The following equation is made of 14 matches:
XIV - V = XX

The following equation is made of 11 matches:
IX - IX = V

The following equation is made of 12 matches:
X = VIII - II

The following equation is made of 7 matches:
VII = I

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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### #1834 Identical Triangles

Posted by on 31 March 2007 - 11:28 PM

4 Identical Triangles - Back to the Matchstick Puzzles
Move one matchstick to get 4 triangles.

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### #102Bear

Posted by on 30 March 2007 - 06:41 PM

Bear - Back to the Einstein's Riddles
The famous physicist allegedly made this riddle for his scholars.
A fellow encountered a bear in a wasteland. There was nobody else there. Both were frightened and ran away. Fellow to the north, bear to the west. Suddenly the fellow stopped, aimed his gun to the south and shot the bear. What colour was the bear?
If you don't know, this may help you: if the bear ran about 3.14 times faster than the fellow (still westwards), the fellow could have shot straight in front of him, however for the booty he would have to go to the south.

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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### #98Gardens

Posted by on 30 March 2007 - 06:20 PM

Gardens - Back to the Einstein's Riddles
Five friends have their gardens next to one another, where they grow three kinds of crops: fruits (apple, pear, nut, cherry), vegetables (carrot, parsley, gourd, onion) and flowers (aster, rose, tulip, lily).

1. They grow 12 different varieties.
2. Everybody grows exactly 4 different varieties
3. Each variety is at least in one garden.
4. Only one variety is in 4 gardens.
5. Only in one garden are all 3 kinds of crops.
6. Only in one garden are all 4 varieties of one kind of crops.
7. Pears are only in the two border gardens.
8. Paul's garden is in the middle with no lily.
9. Aster grower doesn't grow vegetables.
10. Rose grower doesn't grow parsley.
11. Nuts grower has also gourd and parsley.
12. In the first garden are apples and cherries.
13. Only in two gardens are cherries.
14. Sam has onions and cherries.
15. Luke grows exactly two kinds of fruit.
16. Tulips are only in two gardens.
17. Apples are in a single garden.
18. Only in one garden next to the Zick's is parsley.
19. Sam's garden is not on the border.
20. Hank grows neither vegetables nor asters.
21. Paul has exactly three kinds of vegetable.

Who has which garden and what is grown where?

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### #96Pouring water II.

Posted by on 30 March 2007 - 06:13 PM

Pouring water II. - Back to the Water and Weighing Puzzles
Given three bowls: 8, 5 and 3 liters capacity, divide 8 liters in half (4 + 4 liters) with the minimum number of water transfers. Note that the 8-liter bowl is initially filled with 8 liters of water and the other two bowls are empty - that is all water you have.

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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### #90Weighing II.

Posted by on 30 March 2007 - 05:57 PM

Weighing II. - Back to the Water and Weighing Puzzles
A genuine gummy drop bear has a mass of 10 grams, while an imitation gummy drop bear has a mass of 9 grams. Spike has 7 cartons of gummy drop bears, 4 of which contain real gummy drop bears and the others – imitation.
Using a scale only once and the minimum number of gummy drop bears, how can Spike determine which cartons contain real gummy drop bears?

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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### #88Weighing IV.

Posted by on 30 March 2007 - 05:53 PM

Weighing IV. - Back to the Water and Weighing Puzzles
One of twelve tennis balls is a bit lighter or heavier (you do not know which) than the others. How would you identify this odd ball if you could use an old two-pan balance scale only 3 times?
You can only balance one set of balls against another, so no reference weights and no weight measurements.

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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### #79Honestants and Swindlecants II.

Posted by on 30 March 2007 - 05:31 PM

Honestants and Swindlecants II. - Back to the Logic Problems
Afterwards he meets another two aborigines. One says: "I am a Swindlecant or the other one is an Honestant." Who are they?

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### #51Sheikh's Heritage

Posted by on 30 March 2007 - 04:22 PM

Sheikh's Inheritance - Back to the Logic Puzzles
An Arab sheikh tells his two sons to race their camels to a distant city to see who will inherit his fortune. The one whose camel is slower wins. After wandering aimlessly for days, the brothers ask a wise man for guidance. Upon receiving the advice, they jump on the camels and race to the city as fast as they can.
What did the wise man say to them?

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### #29Baldyville

Posted by on 30 March 2007 - 03:40 PM

Baldyville - Back to the Cool Math Games
These are the conditions in Baldyville:

1. No two inhabitants have the same number of hairs on their head.
2. No inhabitant has exactly 518 hairs.
3. There are more inhabitants in town than hairs on any individual inhabitant's head.

What is the highest possible number of inhabitants?

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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