- you have 51 coins, 11 of them being 'heads up'.
- you now have to make 2 groups; both of them having the same amount of coins that have heads up.
- you are blindfolded, can't ask for help and can't sense in whatever way which coins are head up or not.
- you are only allowed to flip the coins whenever you want.
how do you do this?
goodluck team.
*hint 1: there is a proper solution for this, no lame answers etc.
*hint 2: the number of coins for this riddle is irrelevant.