What has to be broken before you can use it?

You can hear me, but you can't touch or see me.

What am I?

Why are televisions attracted to people?

Which digit occurred maximum times between the number 1 and 1000?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

What country can make you shiver?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

How can a man go eight days without sleep?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Find the value of "a" by solving the maths equation in the picture below: