Find the value of "?" in the ball picture Riddle below:

What is the below Rebus indicate?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What runs around the whole yard without moving?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is the next number in this matchsticks series riddle?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?