What can you catch but never throw?

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 ?

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.

Can you count the number of children in the picture below

There are 3 apples in the basket and you take away 2. How many apples do you have now?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

Can you name four days which start with the letter 'T'?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I have feet, but no legs. Which animal Am I?