I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Two men are in a desert. They both have packs on. One of the guys is dead. The guy alive has his pack open, and the guy who is dead has his pack closed. What is in the pack?

What's the best place to go shopping in the ocean?

Find the hidden tiger in the given optical illusion ?

When we see 2 but call 10?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can you quickly find which two matchstick figures are identical?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?