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

What is the below Rebus indicate?

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

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

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Count the squares in the matchstick puzzle below?

A bomb exploded in a room full of married couples and no one died. How?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?