What number divided by 4 is the same as that number minus 4?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Which fur should we be getting from the Lion?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

What is black when you buy it, red when you use it, and gray when you throw it away?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?