@Douglas nopes there is only one solution here it is
* See answer is in the question ques is saying that first there is 2 digit number after 1 hour number interchanged so let numbers be xy then yx now third it is saying that both numbers are again repeating and we also know that yx>xy and yx-xy <100 so third number must be 1bc where bc may be xy or yx or having any one of x or y when one may be '1' now x*10+y + z = y*10 + x also 1bc = 10*y + x + z 1bc = yx + yx - xy 1bc = 2yx -xy 1bc = 2*(10y+x) - 10x -y 1bc= 20y +2x -10x -y 1bc= 19y - 8x now let number be 1xy = 100 + 10*x +y = 19y - 8x 100 + 18x = 18y 50 + 9x = 9y --> no integer solution now let number be 1yc where x=1 so 100 + 10y + c = 19y - 8 108 + c = 9y --> gives either y>9 or c>9 and it will not satisfy the conditions except the following now let number be where x=1 1cy = 100 +10c + y = 19y - 8 108 +10c = 18y --> gives y=6 and c=0 i hope i explain better :) :) * On Wed, Aug 17, 2011 at 11:51 PM, sagar pareek <sagarpar...@gmail.com>wrote: > @rajul dave > 45 miles per hour is uniform speed > > > On Wed, Aug 17, 2011 at 11:49 PM, rajul jain <rajuljain...@gmail.com>wrote: > >> but its speed is uniform i think Don answer is right >> >> >> On Wed, Aug 17, 2011 at 11:42 PM, Douglas Diniz <dgdi...@gmail.com>wrote: >> >>> There are infinite solutions with this logic, because the third >>> milestone can have more than 2 digits. >>> >>> On Wed, Aug 17, 2011 at 3:08 PM, sagar pareek <sagarpar...@gmail.com> >>> wrote: >>> > @rajul >>> > >>> > 61-16 =45 >>> > >>> > its not 55 miles per hour >>> > >>> > On Wed, Aug 17, 2011 at 11:33 PM, Don <dondod...@gmail.com> wrote: >>> >> >>> >> Actually you are all wrong. His uniform speed was zero, and he was >>> >> sitting by milestone 44 the whole time. >>> >> >>> >> On Aug 17, 11:58 am, priya ramesh <love.for.programm...@gmail.com> >>> >> wrote: >>> >> > A car is traveling at a uniform speed.The driver sees a milestone >>> >> > showing a >>> >> > 2-digit number. After traveling for an hour the driver sees another >>> >> > milestone with the same digits in reverse order.After another hour >>> the >>> >> > driver sees another milestone containing the same two digits. What >>> is >>> >> > the >>> >> > average speed of the driver? >>> >> >>> >> -- >>> >> You received this message because you are subscribed to the Google >>> Groups >>> >> "Algorithm Geeks" group. >>> >> To post to this group, send email to algogeeks@googlegroups.com. >>> >> To unsubscribe from this group, send email to >>> >> algogeeks+unsubscr...@googlegroups.com. >>> >> For more options, visit this group at >>> >> http://groups.google.com/group/algogeeks?hl=en. >>> >> >>> > >>> > >>> > >>> > -- >>> > Regards >>> > SAGAR PAREEK >>> > COMPUTER SCIENCE AND ENGINEERING >>> > NIT ALLAHABAD >>> > >>> > -- >>> > You received this message because you are subscribed to the Google >>> Groups >>> > "Algorithm Geeks" group. >>> > To post to this group, send email to algogeeks@googlegroups.com. >>> > To unsubscribe from this group, send email to >>> > algogeeks+unsubscr...@googlegroups.com. >>> > For more options, visit this group at >>> > http://groups.google.com/group/algogeeks?hl=en. >>> > >>> >>> >>> >>> -- >>> ------------------------------------------------------------------- >>> Douglas Gameiro Diniz >>> Engenheiro de Computação - 2003 - UNICAMP >>> >>> Mobile: (19) 92158777 >>> Gtalk: dgdiniz >>> Msn: thedougdi...@hotmail.com >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to algogeeks@googlegroups.com. >>> To unsubscribe from this group, send email to >>> algogeeks+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to algogeeks@googlegroups.com. >> To unsubscribe from this group, send email to >> algogeeks+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > > > -- > **Regards > SAGAR PAREEK > COMPUTER SCIENCE AND ENGINEERING > NIT ALLAHABAD > > -- **Regards SAGAR PAREEK COMPUTER SCIENCE AND ENGINEERING NIT ALLAHABAD -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
