Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I have Rs.50 and I spend it in the way as below.

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

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What shoe company does this rebus represent?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

I have branches, but no fruit, trunk or leaves. What am I?

Why is Saturday stronger than Monday?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.