Be active and find the killer in the picture Riddle below.

If you say my name, I will no longer exist. 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

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Can you place three balls such that the equation shown in the picture holds true?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I look at you, you look at me I raise my right, you raise your left. What am I?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Find the hidden panda in the image below.

Bay of Bengal is in which state?