Posted by elai on October 17, 2008
This entry was posted on October 17, 2008 at 4:02 pm and is filed under Block G Problems.
.
You can follow any responses to this entry through the RSS 2.0 feed.
You can leave a response, or trackback from your own site.
October 20th, 2008 at 7:24 pm
The steps in getting the solution was pretty straight-forward however the presentation of the method could have been better.
October 20th, 2008 at 8:01 pm
Ridzwan. What would have made the presentation better? Be SPECIFIC.
October 24th, 2008 at 11:13 am
The writing at times wasn’t really visible but other than that great job on the presentation
October 24th, 2008 at 9:09 pm
can’t see and don’t understand!!!!!!
October 26th, 2008 at 4:26 pm
i caant see whats on the whiteboardd
October 27th, 2008 at 6:20 pm
sorry about the writing being a little difficult to read. On the left side of the board we just wrote out the question, which mr lai has provided on this page. However, on the right side of the board we added(in a column) the digits 1, 11, 101, 1001, etc. until there is a digit with 50 zeros in the middle. after getting the sum of those numbers we added the answers digits together.
October 29th, 2008 at 5:01 pm
hmm i couldnt watch all of it…it kept restarting at 32 seconds
but i think if i had seen all of it…the accent and the mask would have really aided in my comprehension of the equation =D–> good job!
October 30th, 2008 at 8:39 pm
I liked your simple and easily-understood method of using elementary-school adding to solve this freaky Part C problem. For example, you clearly showed us where the “62″ came from and where the “50″ came from, and all we needed to do was to add those 58 1s together(50+6+2) to find the sum of the digits. It was a great video despite all the flaws stated already by other students. =D