Which alphabet letter is a question?

I have no life, but I can die. What am I?

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

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Can you count the number of squares in the figure below?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

A sundial has the fewest moving parts of any timepiece. Which has the most?