I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

What is full of holes but still holds water?

what's the probability of getting a king or a queen from a pack of 52 cards?

Why Aeroplane windows are round?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?