If it took eight men ten hours to build a wall, how long would it take four men to build it?

Can you place six X (crosses) in below board without making three in a row in any way ?

How many triangles are there in the picture below?

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

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

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?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS