What can you catch but never throw?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

What does Alexander the Great and Winnie the Pooh have in common?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Can you solve the maths in the below-given picture equation?