A boy was taken to a magical land of wonder and chocolate, but sadly, a disease broke out in this land! He has to face off the evil Dr. Vanscosh, who caused the disease to break out, in a probability test.
Dr. Vanscosh gives the young boy 100 chocolate bars, 50 injected with deadly poison. He allows the boy to sort them in 2 bags, and the boy knows which has been poisoned. The boy can place as many of the 100 in each bag, as long as neither bag is empty!
Then the Dr. plays a dirty trick: he blindfolds the boy and then he swaps the bags around (either 1 or 2 times, meaning there's a 50/50 chance of them being in the same spot or swapped)
The boy, still blindfolded, then needs to take a bar and eat it, he cannot feel the bags, he has to stick his hand in the bag, and take a chocolate bar. If he dies, all chocolate in the world does. If he lives, chocolate will be saved forever and the Dr will be forced to eat his own poison.
What would have been the best way for the boy to organize them? What will his chances be afterwards..?