What has one letter and starts with an E?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Count the number of squares in the picture below.

Can you start the fire using two pieces of wood?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

Where do you go to learn how to make ice cream?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

What is the next shape from answers A, B, C, and D figure?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?