Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What can you deduce from the following BrainBat?

CRY
LMKI

Name a key which is hardest to turn.

Count the number of balls in picture below:

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

How can a man go eight days without sleep?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

There is something which is always coming but never arrives?