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{
\bf Attendance Quiz \# 12 for Dr. Z.'s Number Theory
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{\bf NAME:} (print!) $\underline
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{\bf E-MAIL ADDRESS:} (print!) 
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{\bf 1.} Using divisiblity tests, determine
which of the following 
integers (written in the usual, base $10$, way)
is divisible by (i) $9$ (ii)$11$ (iii)$7$.

{\bf a.} $683444$

{\bf b.} $17888$

{\bf c.} $139135$


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{\bf 2.} Using the Perpetual calendar algorithm, find out
on what day of the week is going to be  Oct. 17, 5000.

{\bf Hint}: Find out how many leap years will be from now until 5000.


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