What is always in front of you but can’t be seen?

Rearrange the letters in "new door" to make one word.

What goes up but never comes down?

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

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?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Who are the happiest people in IPL match?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Find the next number in the sequence

1, 2, 6, 21, 88, __?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10