You have a calculator whose multiplication button is broken. The only operations that work are addition (x+y), subtraction (x-y), and reciprocation (1/x).

Can you use this calculator to multiply two numbers?

I tok this hint from something I learnt in third grade :

to multiply x by y , add x  ( x+x+x+.....)  y times.

I could not think of decimal multiplication , though .

Posted by Rex on 2005-01-22 14:49:28