|Off on a Tangent
|A Fortnightly Electronic
Newsletter from the Hope College Department of Mathematics
Keno and Lotteries
Follow The Bouncing
Ball: Keno and Lotteries
|Speaker: Mark Bollman, Albion
|Time: Tuesday, February 20 at
|Place: VanderWerf 102
Abstract: Keno, as played in casinos and
in bars and restaurants across Michigan, is a descendant of an ancient
Chinese game and an ancestor of Powerball and similar lotteries.
In this talk, we shall look at the combinatorial mathematics behind
keno and other lottery games and detour--briefly--into the world of
integer programming to examine some tricky questions behind what appear
to be very simple games.
The following colloquia are on
for this semester. Additional ones may be added later.
- Tuesday, April 3, Ed Aboufadel, Grand Valley State
- Tuesday, April 17, Yew Meng Koh, Hope College
- Thursday, April 26, Martha Precup, Northwestern University
Lecture at Grand Valley
year, GVSU's Mathematics Department hosts a lecture, called the Mosaic
Lecture, to celebrate diversity in the mathematical sciences. This
year's lecture will take place on Tuesday, February 27, at 7:30 p.m.
Their speaker is Dr. Deanna Haunsperger, President of the Mathematical
Association of America and Professor of Mathematics at Carleton
College. Her talk is entitled Making Connections: Lessons Learned from
More information can be found here.
for a successful math class
do you fuel for your math classes so you can learn like a champion? A
heaping helping of some Eggs VanKletz? Last night's pizza? Starbucks?
How about your professors, how do they fuel so they can teach like
champions? I'm not sure what prefueling Prof. Mark Pearson did this
morning, but the picture shown is what he was bringing to his Multi 1
class at 9:30 am. He has a coffee for that burst of energy needed to
power through a particularly long problem. The apple, I assume, is to
keep the doctor away during this difficult flu season. And the rotten
I had to do a web search for this one. Maria's
Farm Country Kitchen came to the rescue with a list of ten things
to do with rotten bananas. #1 Banana muffins---I doubt it. #5 A banana
smoothie---I don't think so. #7 Bananas Foster---not on campus. #9 Feed
it to birds, butterflies or babies---hmm, maybe that's it.
Solvers of the Fortnight
our last problem of the fortnight we had the following:
Day is coming up soon," thought Mrs. Hartsema. "I should get a
little something for my grandchildren." She decided to give each
of her 31 grandchildren a number of candy hearts along with their
Valentines. After counting her candy hearts and finding 470 of
them, Mrs. Hartsema figured that each girl would get 7 more candy
hearts than each boy. She gave 74 candy hearts to the children of
her eldest son Art. How many girls did Art have?
Congratulations to the
following correct problem solvers: Thomas Diaz, Forest Rulison,
Jincheng Yang, Will Zywicki, Zheng Qu, Grace Ahlgrim, Josiah Brouwer,
and Philip LaPorte
Four circles are tangent to each
other and tangent to two nonparallel lines, as shown in the
figure. The radius of the smallest circle is 4 and the radius of
the largest circle is 9. Find the radii of the other two circles. Write your solution (showing all
relevant work) on the back of a circle of radius nine and submit it
to the Problem of the Fortnight slot outside Professor Mark Pearson's
office (VWF 212) by 3:00 p.m. on Friday, February 23. As always,
be sure to include your name and the name(s) of your math professor(s)
-- e.g. Tan Gent, Professor Ray D.I. --- on your solution.
the next best thing to playing and winning is playing and losing.