The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Replace the question mark with the number below given a simple math problem.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can it be possible to build a house that has all its four walls facing towards the South?

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

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Which Travels Faster? Solve below famous picture riddle:

What work can one never finish?

What do you see in the given picture?