Can you solve the photo plexer logic ?

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

Why do we preferably have round manhole covers and not square ones?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

How can a man go eight days without sleep?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you identify if it's a murder or a suicide ?

What question can you never answer yes to?