What do you answer even though it never asks you questions?

What is so fragile that saying its name breaks it?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?