You are lost in the woods and the path you are following forks into two: a path to the left and one to the right. One path will lead you to safety while the other will cause you to be lost forever.
At the fork are two twin sisters who know which path is which. The sisters are identical in every way except one: one of the sisters always tells the truth while the other always lies.
You can ask only one question and you don’t know which sister is which. What can you say to them so you know which path to take?
Ask one of the sisters which path their sister would tell you to take.
Let’s say the left hand path is the correct one to follow. The sister that lies knows their truthful sister would tell you the left hand path, so as they always lie they will tell you the right hand path.
The honest sister knows their lying sister will tell you the right hand path and because they’re honest, they will tell you this. So you should follow the opposite path to that whichyou are told, regardless of which sister tells you.
If we look at the green bar we see that its real height is 2/3 of its shadow. So that means we need to find 2 shadows length for the red bar, the uninterruped part and the one on the wall. Since we now know the formula for the floor shadow - real height is 2/3 of it - meaning the part that makes that shadow is 4 meters long. Then we have to add the part on the wall which is straight up, it has no formula so we just add those 4 meters on the wall to the 4 meters we got from multiplying 2/3 by 6 meters and we have 4 meters + 4 meters = 8 meterss
The 15 Minutes Recipe
A recipe requires 15 minutes to cook. You have a 7 minutes hourglass and an 11 minutes hourglass with you. How will you measure 15 minutes using them?
Youturn the 7 minute one and the 11 minutes one at the same time. When the 7 one finishes, turn it again. When the 11 one finishes, you know that 4 minutes have passed, with 4 minutes to get to the desired 15, all you need to do now is turn the 7 minute hourglass again since it counted 4 minutes, and when it runs out it'll be exactly 15 minutes.
You have a 4 minute sand clock and a 7 minute sand clock, you need to measure 9 minutes while using both of them. What's your first move?
(The 'Google Riddles' are interview questions those who wish to get hired were asked).
Well since you know you are not one of the cursed you can go down a tunnel yourself but you want a good answer from the rest so you split the groups in three leaving two left. Let those two go down one tunnel and the other six go down two separate tunnels as well. When you all meet back 20 minutes later either you have found the tunnel or someone else. Now look at the rule majority rules. If the group of three has 2 people saying it wasn't down that tunnel then you should know it wasn't down that tunnel and one of the liars have been spotted. Same with the other group of three as well as the group of two. Judging by the answers the groups gave you, you should go down the right tunnel and head to safety while the spirits possessing the two people should leave and all is well.
In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them.
How will you do it?