Email a copy of **'Another Dark Room'** to a friend

Loading ...

### Share:

- Click to email this to a friend (Opens in new window)
- Click to print (Opens in new window)
- Click to share on Facebook (Opens in new window)
- Click to share on LinkedIn (Opens in new window)
- Click to share on Reddit (Opens in new window)
- Click to share on Twitter (Opens in new window)
- Click to share on Google+ (Opens in new window)
- Click to share on Tumblr (Opens in new window)
- Click to share on Pinterest (Opens in new window)

You split into 90 and 10, and the group of 10 you turnover. All the heads that are in the second group of 10 at first will now become tails, and this is exactly how many tails there are in the group of 90. t1 + t2 = 10 and h2 + t2 = 10, so h2 = t2 ! Turning these unknown number of h2s into t’s make it the same number of t’s as t1!

Quorum almost has it, but not quite. You split the coins into two groups of 50, THEN you turn over all the coins in one of the groups.

*Kirumo* Damn you, autocorrect!

Kirumo, you are today’s winner!

The piles don’t need to be the same size, so make a pile of 10 coins and a pile of 90 coins, flip all of the ten coins and it is guaranteed that the piles have the same number of tails.