Can you find out the total number of triangles in the given figure?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I am quite hot but become too cold if you remove the first two letters. What am I?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Can you spot the man between the coffee bean in the picture below ?

Which digit occurred maximum times between the number 1 and 1000?

Forwards I am heavy, backward I am not. What am I?

Optical Illusion: A cat is hiding in plain sight in the backyard. Only the most observant eyes can spot the cat in 7 seconds. Can you? Test your eye power now!

Bay of Bengal is in which state?