# All Puzzles

• How do you know carrots are good for your eyes?

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• Where can you find August before July?

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• Why do computer programmers always get Christmas and Halloween mixed up?

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• In the city of Mexico, the following facts are true:

No two inhabitants have exactly the same number of hairs.
No inhabitant has exactly 483,207 hairs.
There are more inhabitants than there are hairs on the head of any one inhabitant.
What is the largest possible number of inhabitants of Mexico?

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• The equation shown below is not correct:

5 + 5 + 5 = 550

Can you make the equation correct by placing just one stroke?

(A hint : Putting a stroke through the equal sign is an inventive solution, but not the one we are looking for!)

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• What can you put in a barrel which makes it lighter?

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• You are riding a horse. In front of you, there is a fire engine. A helicopter is following you. To your left a sports car is driving. To your right there is a depth.

How can you arrange that you will all stop simultaneously, without crashing and without mutual communication?

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• On the game of Poker, two people play as follows:
Player 1 takes any 5 cards of his choice from the deck of 52 cards. Then player 2 does the same out of the remaining 47. Then player 1 may choose to discard any of his cards and replace them from the remaining 42. Then player 2 may discard any of his cards and replace them, but he may not take player 1’s discards. ALL of the transactions with the deck are public knowledge, unlike the real game of Poker.

After this process, the winner is the one who has the better poker hand. For the benefit of those who have not played poker, these are the highest ranking hands, in decreasing order of value:

Royal Flush: the A K Q J 10 of the same suit.
Straight Flush: any five consecutive of one suit. Highest card of the five is the tiebreaker. No one suit is more powerful than another.
Four of a kind: all four of one rank (i.e. four aces). A hand with 4 aces outranks 4 kings, etc.
Full house: a pair of one rank and 3-of-a-kind in another rank, i.e. Q Q 8 8 8.
Flush: Any 5 cards of the same suit that don’t satisfy #2.
Because of the clear advantage of player 1, the win is given to player 2 if the hands are equal in strength.

Which player would you rather be? What strategy do you use?

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• Just do it, do not cheat! Because of you did, this test would be no fun. We promise that there are no tricks to this test.

FINISHED FILES ARE THE
RESULT OF YEARS OF SCIENTIFIC
STUDY COMBINED WITH THE
EXPERIENCE OF YEARS

The question is: How many times do you see the letter F in the sentence above? Count them only once! Do not go back and count them again!

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