This was asked during one test by one company recently. "-0s -1s -2s -3s -4s -5s -6s -7s -8s -9s" Replace - with numbers(from 0 to 9. Any digit can appear more than once) so that above expression makes sense. For example: 10s 21s makes sense as there are one zeros and two ones. where as 10s 21s 32s is wrong bcos last part says there are three 2s where as there are only two 2s in expression. [ December 01, 2003: Message edited by: Capablanca Kepler ] [ December 02, 2003: Message edited by: Capablanca Kepler ]

on the right side of everything, every number appears. Therefore, no number will be 0xs. That means that the 0 appears only once. The answer must start with 10s.