If you say my name, I will no longer exist. What am I?

What is harder to catch the faster you run?

People put me on the table and cut me but do not eat me. What am I?

What has a bottom at the top?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?