You need to arrange three 7 and mathematical symbols to form number 1?

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?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

What is common among 11, 69, and 88?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

You can see it everyday, But cannot touch it at will. What is it?

If 21x = 79x, what is the value of x?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Be active and find the killer in the picture Riddle below.

What is the next number in the series?

15 29 56 108 208 ?