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

Why Aeroplane windows are round?

Prove that twice of ten is the same as twice of eleven.

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

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

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Which is the correct shadow of the bird?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

what does the below rebus mean?