A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What is black when you buy it, red when you use it, and gray when you throw it away?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

If a wheel has 54 spokes, how many spaces are there between the spokes?

What is full of holes but still holds water?

Can you name an animal whose killing cannot be performed without spilling your own blood?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?