The alternative is to split the reds into 2 piles and the blues into 2 piles.
Put the 2 piles of blue balls into the urns and then put the reds on top.
Your friend is likely to only take a ball from the top.
Put the 2 piles of blue balls into the urns and then put the reds on top.
Your friend is likely to only take a ball from the top.
If you're not supposed to ride faster than your guardian angel can fly then mine had better get a bloody SR-71.