Minimum Time to Cross Bridge by Four People using Torch

In this post, i am going to discuss a puzzle minimum time to cross bridge by four people using torch.

Problem Statement

Four people need to cross a bridge at night and they have one torch. The bridge can handle the load of only two people at a time. Person A can take 10 minutes, B takes 7 minutes, C takes 2 minutes and D takes 1 minute to cross the bridge. When two people cross the bridge together, they must move at the slower person’s pace. What’s the minimum time taken by four of them to cross the bridge.

How to Measure 4L Water with 3L and 5L Jugs

In this post, let’s discuss a interesting puzzle how to measure 4l water with 3l and 4l jugs.

Problem statement : You have two jugs of capacity 3L and 5L. There is no measurement lines on jug. You need to measure 4L water using 3L and 5L jug. You can use extra water as much as you need. This is one of the favourite puzzle question asked by an interviewer to check your thinking ability.