There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

Which country gets ill every time?

Can you find the missing piece of the Porsche?

Prove that the below maths equation is true.

8 + 8 = 91

What can jump higher than a building?

What does a man do only once in his lifetime, but women do once a year after they are 29?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

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

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?