Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Find the missing letter in the last circle logically in the given below picture.

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?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

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

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What is the centre of gravity?