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

They are three errirs in this question. Can you find them?

What number divided by 4 is the same as that number minus 4?

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

Why do we preferably have round manhole covers and not square ones?

Why is the Hole below a Lock?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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

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