What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Count the number of balls in picture below:

What Deficiency does the below rebus represent?

VIT_MIN

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

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?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

What do you think with the below Picture ?

Which famous Hollywood movie name is hidden in the below rebus?

What does this mathematical rebus means ?