Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

The centre of the third figure is empty. What digit should fit inside?

What does below rebus means ?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

What can you serve, but never eat?

what does the below rebus means?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?