Can you place six X (crosses) in below board without making three in a row in any way ?

Give it food and it will live; give it water and it will die.

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

Can you count the number of squares in the figure below?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

If 1+9+8=1, what is 2+8+9?

Can you divide the below-given shape into four equal and identical pieces?

Take one out and scratch my head, I am now black but once was red. What am I?