A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

Count the Triangle in the figure given below:

In the image given, you can find several triangles. Can you count them all?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

Which tank will fill first?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Which Travels Faster? Solve below famous picture riddle: