Teacher: If you have 10 cookies and I take 2 how many to you have?
Me: 10.
Teacher:No, think of it like this, If I steal 2 of your 10 cookies what will you have left?
Me: 10 and a dead body.

Teacher: If you have 10 cookies and I take 2 how many to you have?
Me: 10.
Teacher:No, think of it like this, If I steal 2 of your 10 cookies what will you have left?
Me: 10 and a dead body.