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Old 21st May 2011, 09:44 AM   #81
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For any number, such as 89764396, can be written as a series of digits, all seperate.

Consider each one in turn,

8x9 = 72
9x9 = 81
6x9 = 54
etc etc
when any single digit (>1) is multiplied by 9, the "tens" column increases by 1, and the "units" column descreases by 1, so they always add to a constant: 9


Another interesting fact:
You can't walk around a revolving door twice without smiling. (try it)
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Old 31st May 2011, 07:04 AM   #82
thadman is offline thadman  United States
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During the first 12 months following the birth of a child, on average, the mother loses 700hrs of sleep, is interrupted every 20 seconds and marital satisfaction decreases by 70%.
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Old 31st May 2011, 07:31 AM   #83
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Quote:
During the first 12 months following the birth of a child, on average, the mother loses 700hrs of sleep, is interrupted every 20 seconds and marital satisfaction decreases by 70%.
This happens to me also , when following the forum I change day with night ( the monitor is my sun - the cabinets are my sons )
and the belly circumference expands notably .
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