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?

How can you make a TV, a bed, a dog, and a car liquid?

Count the number of triangles in the below picture?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

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?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

Why Aeroplane windows are round?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What number comes next in the series?

5 15 5 18 5 24 14 20 _