Find the next number in the sequence

1, 2, 6, 21, 88, __?

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

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

You need to move three matchsticks to form three squares. Can you do it?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

How is a fly different from a mosquito?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?