It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

How can you take 2 from 5 and leave 4?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

I travel all around the world but always stay in the corner. What am I?

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

What Word am I Looking For ?

In a classic wine shop, the list of three most popular wines are:
- The cost of 1 French wine bottle: 500$
- The cost of 1 German wine bottle: 100$
- The cost of 20 Dutch wine bottles: 100$

John entered the wine shop and he needs to buy
- All three types of wine bottles.
- Needs to buy Dutch wine bottles in multiples of 20.
- Need to buy 100 wine bottles in total.

John has only 10000$. How many wine bottles of each type, John must buy?