Find the next number in the sequence

5 12 24 36 ?

What kind of band never plays music?

What number do you get when you multiply all of the numbers on a telephone's number pad?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

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?

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

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?