Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

What goes up but never comes down?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Can it be possible to build a house that has all its four walls facing towards the South?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?