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?

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

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve the mathematical equation in the picture below.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

What can you deduce from the following BrainBat?

CRY
LMKI

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?