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

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?

I have feet, but no legs. Which animal Am I?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Why do people go to bed?

During which month do people sleep the least?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

What type of curtain does this rebus mean

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?