Bjørnar (he/him) on Nostr: Take ten and flip them. If you took ten tails, they turn into ten heads to match the ...

Take ten and flip them. If you took ten tails, they turn into ten heads to match the original ten. If you have any heads in your new ten, they turn into tails, so they're removed from the ten in both piles, leaving a balanced number (0,1,3, ..., 9) of heads in both sets. (Edited because I wrote tails instead of heads at the end )