What does this rebus puzzle means ?

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

Count the Triangle in the figure given below:

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Using Only Five 5's and any mathematical operator make sum as 37

What is the largest number you can write with just 3 digits?

What can go up a chimney down, but can’t go down a chimney up?

What does below chemistry rebus means?