In which direction should the missing arrow point?

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

If you say my name, I will no longer exist. What am I?

What is the next number in the series?

15 29 56 108 208 ?

How can you take 2 from 5 and leave 4?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

There was a strange boy who was born before his father. How can this be possible?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Complete the table series riddle by finding the number that can replace "??".