Problem - 4702
$\textbf{Three Coins}$
With an infinite supply of coins, what is the minimum number of coins required for each and every coin to touch exactly three other coins.
$\textbf{Solution}$
Four. Place three on the table in a triangular manner so that they touch each other. Then put the fourth on top of these three.
$\textbf{Note}$
Do not let the word "an infinite supply of coins" scare or mislead you. Stay calm.