A man was just doing his job when his suit was torn. Why did he die three minutes later?

What work can one never finish?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

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?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

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

What does it mean?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What is black when you buy it, red when you use it, and gray when you throw it away?