Find the missing letter in the last circle logically in the given below picture.

How can a man go eight days without sleep?

How many times do a clock's hands overlap in a day ?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

The centre of the third figure is empty. What digit should fit inside?

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

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?