Count the number of triangles in the picture below:

Which is faster, Heat or Cold ? Explain.

Can you identify if it's a murder or a suicide ?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Why do you find that most of the buildings are deprived of the 13th floor?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Find the missing number in the sequence below:

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?