What number comes next in the series?

5 15 5 18 5 24 14 20 _

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

What came first, the chicken or the egg?

Using eight eights and addition only, can you make 1000?

What do you get if you add 2 to 100 four times?

How can you write nineteen in a manner that if we take out one, it becomes twenty?