There was an aeroplane crash, every single person died, but two people survived. How is this possible?

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

Can you count the number of triangles in the given picture?

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

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What kind of tree can you carry in your hand?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?