Coin touches coins

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?




Similar Riddles

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

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I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

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When does a USA Potato change its nationality?

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A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

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At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

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I’m orange, I wear a green hat and I sound like a parrot. What am I?

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Can you find the hidden animal in the picture below?

Find Animal In Picture Riddle

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What numbers should go on the bottom line?
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8 2 10 12
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? ? ? ?

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The dirtier I get, the whiter I look. Who am I?

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If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.