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Microwave Math (Posted on 2005-11-08) Difficulty: 2 of 5
The keypad on my friend's microwave is broken: only one of the number keys (the N key) works. He found a workaround that allows him to cook for exactly 2 minutes, which is perfect for rewarming his giant cup of coffee. He does this by entering NN seconds, then start. He cooks for a period of time and then hits the pause button followed by N and start. (On his microwave, entering 99 would be the same as entering 139, since the 3rd number from the right is minutes)

For example, if N were "1", he could enter 11, cook until the display reads 6, pause, enter 1 (the display then reads 61), and cook for a total of 66 seconds. He also brags that using the same N key as above, but by pausing at a different time, he can cook for another whole number of minutes (other than 2).

Which number key is working on his microwave?

See The Solution Submitted by Larry    
Rating: 3.5000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: microwave numbergoFish2005-11-09 14:13:49
microwave numberbluto2005-11-09 13:05:45
re: And the winning number is...Charlie2005-11-08 11:29:30
Solutioncomputer solutionCharlie2005-11-08 11:01:51
SolutionSolutiongoFish2005-11-08 10:56:43
re(2): And the winning number is...Bob Smith2005-11-08 10:35:24
Solutionre: And the winning number is...Leming2005-11-08 10:07:22
SolutionAnd the winning number is...Bob Smith2005-11-08 09:58:07
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