10 Coins Puzzle

By | August 11, 2017

Problem: Suppose that, you are blindfolded and 10 coins are place in front of you on table.
Now, you are allowed to touch the coins, but you can’t tell which way up they are by feel.It is told that there are 5 coins head up, and 5 coins tails up but not which ones are which. And, obviously you have to believe, since you are blindfolded and are playing game with your wish. πŸ˜‰
So, How do you make two piles of coins each with the same number of heads up? You can flip the coins any number of times.

This seems to be a very difficult puzzle, but its really not.
Please take your time before jumping on the solution directly.


Make 2 piles with equal number of coins. Now, flip all the coins in one of the pile. And, BINGO. You have got same number of Heads Up in each pile. πŸ˜‰

How this will work? lets take an example.

So initially there are 5 heads, so suppose you divide it in 2 piles.


P1 : H H H T T
P2 : H H T T T

Now when P1 will be flipped
P1 : T T T H H

P1(Heads) = P2(Heads)

Another case:

P1 : H T T T T
P2 : H H H H T

Now when P1 will be flipped
P1 : H H H H T

P1(Heads) = P2(Heads)

See, I told you its easy. πŸ™‚