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?

Solve the puzzle by telling what does below picture means.

What is always in front of you but can’t be seen?

When does a USA Potato change its nationality?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

What does an Island and the letter T have in common?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?