If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

why number 8549176320 is one of a kind?

What number comes next in this sequence:
7 8 5 5 3 4 4 _