0.(999) = 1 - 1/inf this should be intuitive. and since 1/inf is 0 0.(999) = 1 Check the same reasoning in mathematical notation: http://upload.wikimedia.org

0.(999) = 1 - 1/inf this should be intuitive. and since 1/inf is 0 0.(999) = 1 Check the same reasoning in mathematical notation: http://upload.wikimedia.org/math/6/f/a/6fa510b44742046a167b4b8515162825.png http://upload.wikimedia.org/math/6/f/a/6fa510b44742046a167b4...