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November 2013: Snow White, Happy Days, and Bingo

(from November 20, 2013)

"Binary Bingo"
Visit the mathplane comic archives
(from November 26, 2013)
"Repeating decimal subtraction"
*One minute math question:*
Solution and more math stuff in the spare parts section
(from November 22, 2013)

"Happy Days"
*The Fonz learns Calculus!*
(from November 14, 2013)

"Snow White and the 7 Dwarf"
'Counting 7's'
1) If you listed all the whole numbers between 1 and 1000, *how many 7's* would appear in the list?
2) *How many integers* between 1 and 1000 contain at least one 7?
SOLUTION
(from November 7, 2013)

"Study Habits"
*Academic influences from Angel and Devil...*
(from November 1, 2013)
"Leftover Halloween Candy"
AFTER a 30% discount, a bag of Halloween Candy costs $10.

What was the ORIGINAL price of the candy?
The answer is here
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