The Little ant seems to be always confused. Do you know why?

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?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

In the four images below, can you find the odd one out?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

Can you name some countries which do not have the alphabet 'A' in them?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What jumps when it walks and sits when it stands?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?