Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

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?

Make a sentence consisting of three words that have the whole alphabet.

Can you move 2 matchsticks to form four equal sized squares.

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

What is the longest word in the dictionary?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

With the help clues provided in the image, can you find the 5 digit key?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?