What does does this rebus picture means ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

How is a fly different from a mosquito?

What do you see in the image below

Next Number in the Series,

5, 16, 49, 104, ?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Can you place three balls such that the equation shown in the picture holds true?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

How many triangles are there on the puzzle below?