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

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Asked by Neha on 27 Aug 2021


What does this rebus mean?

O
N
C
E
TIME

Asked by Neha on 22 Feb 2025

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

Asked by Neha on 14 Aug 2024


Which number should replace the question mark?

Triangular Logic

Asked by Neha on 11 Aug 2023

I always drive my customer away.

Who am I?

Asked by Neha on 29 Oct 2024

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Doctor

Asked by Neha on 20 Jun 2024


An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

Correct the Equation

Asked by Neha on 14 May 2021

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

Asked by Neha on 12 May 2025

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Asked by Neha on 14 Dec 2020


You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

Asked by Neha on 20 Jan 2026

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Amazing Facts

Challenging

There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.