Question: Maths Question! 1+1-1+1-1+1-1+1-1+1 ... to infinity can equal both 1 and can also equal an infinitely negative even number. Lets call ( 1+1-1+1-1+1-1+1 ... to infity ) A. If I multiply A by A, then I end up with 1-1+1-1+1-1+1-1+1-1... to infinity Which can equal either 0 or it can equal and infinitely negative odd number, so does that mean, 1 x 1 = 0? Or even that an inifinitely negative even number multiplied by and infinitely negative even number = an infinitely negative odd number? Have I just broken maths? :D. I have my maths teacher stuck on this one.