10+10 and 11+11 can give you the same answer.

Explain how?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

What does below pictogram mean?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

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

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What word is represented by this rebus?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?