What is the word or phrase below?
R | E | A | D

What runs around the whole yard without moving?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

Count the number of triangles in the below picture?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

Look at the picture and find out which square is not linked with any of the other squares.

What has lots of eyes, but can’t see?

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?

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