There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

When does a USA Potato change its nationality?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

What makes this number unique: 8,549,176,320?

Can you start the fire using two pieces of wood?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

What does the below rebus riddle means?

what's the probability of getting a king or a queen from a pack of 52 cards?