Take away the whole and some still remain. What is it?

What kind of tree can you carry in your hand?

I don't get anymore wetter, no matter how much rain falls on me.

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?