I travel all around the world but always stay in the corner. What am I?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

What's the next in the series?

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

How can you make a TV, a bed, a dog, and a car liquid?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

What is wrong in the below Picture?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?