Blind man and Pills | Puzzles for Interview - Interview Preparation PDF Download

Introduction

Imagine being stranded alone on a deserted island and you have only four pills to survive. But there's a catch- you must take exactly one red pill and one blue pill, or else you will die. Now, what can a blind man do in such a situation?

Solution

The solution to this problem is simple. The blind man needs to break each of the pills in half. As he does this, he must pop one half of the blue pill in his mouth and keep the other half aside for the next day. Similarly, he should do the same with the red pill.
By doing this, he will have consumed one half of the red pill and one half of the blue pill on the first day. The next day, he can take the remaining halves of the pills that he kept aside, and he will consume the other half of each pill.
Therefore, the blind man will successfully take one red pill and one blue pill and survive on the deserted island.

Conclusion

This solution may seem simple, but it is a smart way for a blind man to take two different pills and survive on a deserted island. Breaking the pills in half and taking half of each pill on different days is a smart way to ensure the blind man's survival.