who is silent in the parliament?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

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?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What makes this number unique: 8,549,176,320?

Forwards I am heavy, backward I am not. What am I?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

How can you tell a raw egg from a hard-boiled egg?