Which tank will fill first?

I have eight fingers and two thumbs but I do not live. What Am I?

What is wrong in the below Picture?

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

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

I am sure no one can have two things for dinner. what are they?

Can you replace the question mark with the correct number in the below table sequence?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

The centre of the third figure is empty. What digit should fit inside?