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MathMagic Cycle 18: Level 7-9 Regular
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A grandfather clock at my in-laws is known to loose 7 minutes every hour.
On a Sunday, about a month ago I noticed that it was EXACTLY three minutes
slow- to the second. Later that month, and much to my surprise, the clock
was EXACTLY at the right time. My father-in-law remarked that he had done
nothing to adjust the clock, and I knew he hadn't. Work with your NTPs to
figure out what day of the week was my second visit.
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MathMagic Cycle 18: Level 7-9 Advanced
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Using the numbers 1 9 9 2 in a "locked" position, can you develop a 31 day
calendar for the month of October? You can use addition (+), subtraction
(-), multiplication (*), division (/) exponents (^) factorial (!) square
root (sqrt) and, naturally, parenthesis ( ).
Example: Friday the 13th could be: (1+sqrt(9))!-9-2 (Scary, isn't it?)
(Notice that the numbers appear in the "locked" sequence)
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Good luck
MrH