Can you find out which number multiplied by itself will give the output as 12345678987654321?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

How far can you walk into the woods?

Find the number of squares in the below picture

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?