I have as many brothers but my brothers have twice the number of sisters as brothers.How many of us are there?

Answer 1

http://en.allexperts.com/q/Puzzle-Solving-1841/2008/4/mathlogic-puzzle.htm

Answer 2

I believe you left out some words. Shouldn't the question be?

I have as many brothers as sisters but my brothers have twice the number of sisters as brothers.How many of us are there?

Answer 3

http://www.funshun.com/fun-stuff/riddle-72-5935.html