Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

John was piloting a plane behind a car but was never able to overtake it. Why?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What kind of band never plays music?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

What's the only room from which no one can enter or leave

Why is Saturday stronger than Monday?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

A sundial has the fewest moving parts of any timepiece. Which has the most?