Eight of us go fourth, not back, to protect our king from an attack. What are we?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

When does a USA Potato change its nationality?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

What has hands, but can’t clap?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

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

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

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

You can see it everyday, But cannot touch it at will. What is it?