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

What is it?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

In the picture given below, can you find out which digit will take place of the question mark?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

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

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

I am white when I am dirty, and black when I am clean. What am I?