Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

What is full of holes but still holds water?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If you say my name, I will no longer exist. What am I?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

What can you catch but never throw?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Imagine you are in a room with no windows or doors. How will you get out?

Find the number of squares in the below picture

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?