What has a ring but no finger?

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

How Come ??

Which number should replace the question mark?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

In the given picture, in how many ways can you read the word "Tiger"?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

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

What Word am I Looking For ?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?