I have an eye but still cannot see.

Who am I?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

Can you count the number of squares in the given picture?

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

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

When is the top of a mountain similar to a savings account?

In which direction should the missing arrow point?

Find the hidden tiger in the given optical illusion ?

The more you take me, the more you leave me behind.
Who Am I?