But the majority of people end up picking the same, wrong jelly bean.
See if you can avoid the trap and see how it unfolds below!
Let’s get to the riddle!
One is okay to eat, and the other two are poisonous.
He says that he’ll take away one of the non-green jelly beans and he guarantees that the one he removes is poisonous.
HE REMOVES THE BLUE ONE.
Let’s explain why…
Most people would figure they’ve got a 50/50 chance since they know that one jelly bean is poisonous and the other is not, but it’s a little trickier than that.
When the green was selected, there was a 1 in 3 chance that it was safe. And a 2 in 3 chance it was poisonous.
When the blue one was removed, the green was still a 1 in 3 chance of being safe, but we learn more about the red one. Because the blue one was taken away, there’s actually a 2 in 3 chance that the red one is safe.
So it’s twice as likely to be safe and the better pick!
Statistics don’t lie, but they can be pretty confusing sometimes!