If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

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?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I am an odd number. Take away a letter and I become even. What number am I?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Which country gets ill every time?

What jumps when it walks and sits when it stands?

What is the next number in this series?

4,12,84,3612....

Why is a river so rich ?

What runs around the whole yard without moving?