Can you count the number of triangles in the given picture?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

How is a fly different from a mosquito?

When is the top of a mountain similar to a savings account?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Remove two matchsticks to make the below equation correct.

Can you make four (4) nines (9) equal 100?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Spot what is wrong here in below Picture?