SPOOKY-Maths!
It
takes less than a minute.
1.
First of all, pick the number of times a week
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2. Multiply this number by 2
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3. Add 5
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I'll wait while you get the calculator................
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You
should have a three digit number ....
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The first digit of this was your original number
(i.e.,
Voila!
Got
it worked out?