CMSC250
Discrete Structures
Spring 2005
Announcements
May 20, 2005

Final scores (for those who gave an alias on their first quiz) are here. These include scores on the final exam. Statistics for the final exam appear at the top of the page.

Final course letter grades can now be viewed on Testudo.

Enjoy your break!

May 10, 2005
As announced in lecture, the last day of regular office hours for the semester will be Thursday (the 12th). However, the following extra office hours will be held next week before the final exam:
  • Monday 16th 12-2 Yao
  • Monday 16th 2-5 Bill
  • Tuesday 17th 11-1 Azar
  • Tuesday 18th 2-4 Martin
  • Wednesday 18th 11-1 Adam
  • Wednesday 18th 1-3 Matt
May 10, 2005
Scores for all coursework graded so far have been posted on the class webpage again (for those students who gave an alias on their first quiz). Please check your scores, and if you notice any discrepancies please notify us RIGHT AWAY. The average score on quizzes is 74.3. The average score on homeworks is 74.1.
April 25, 2005
Some changes are made to HW12 #3.
In the definitions of SQ and PRIMES, y is in N.
April 12, 2005
IMPORTANT: Grade interpretation
April 12, 2005
Question #2 of homework #10 has just been reworded for clarification, as discussed in lecture on Friday and Monday.
April 4, 2005
Sample exams for the second exam from the past three semesters have now been posted. Keep in mind what was said in class about the applicability of the sample exams. Even more sample exams can be found on previous semesters' class webpages for this course. Last semester (Fall 2004) this course had three midterms rather than two so a few questions from last semester's third exam are relevant, therefore these have been posted as well.
March 30, 2005
In the first extra-credit problem (Truth tellers and randoms), you can only ask the LARRYs and BILLs yes/no questions.
March 28, 2005
Current scores as of March 28 has been posted in Grades section.
March 17, 2005
The extra-credit problems discussed in lecture are now posted (here)
March 16, 2005
There was a typographical error in Homework #8, problem #5, as handed out in discussion section today. It had said a_0 = 10 and a_2 = 20, but this should be a_0 = 10 and a_1 = 20. Please correct it on your copy. The correction has been made in the posted version.
February 25, 2005
The exam is RESCHEDULED for Thursday evening, March 3, 6:30-8:30 (a half-hour later than scheduled before), in the same rooms. Anyone with conflicts with this NEW date and time should see their instructor on Monday.
February 24, 2005
Due to the University's closing, the exam will be delayed. We are going to request the same rooms be reserved for one week later next Thursday night (March 3), but the exam time may be scheduled a half-hour later. We will give more specifics when we have them. Those with conflicts with the exam time should discuss it with us again AFTER we have a new exam time and location scheduled.
February 23, 2005
If the University closes due to weather, all CMSC 250 activities (such as class and office hours) will stop while the University is closed, and resume when the University reopens. If the University closes tomorrow evening, then the midterm will be rescheduled for a later date (as will Friday's makeup). IF THE UNIVERSITY IS OPEN TOMORROW EVENING DURING THE MIDTERM TIME THEN THE EXAM WILL GO ON AS SCHEDULED. To see whether the University is closed, check www.umd.edu, or call (301) 405-SNOW.
February 21, 2005
Sample exams from the past three semesters have now been posted. Keep in mind what was said in class about the applicability of the sample exams. Even more sample exams can be found on previous semesters' class webpages for this course in www.cs.umd.edu/class.
February 15, 2005
  • The next set of lecture slides are now on the webpage- be sure to print and bring them to class before lecture on Wednesday (the 16th). Some typographical errors which were on the slides for the previous topic (predicates) during lecture have been now been corrected on the webpage, so you may want to print them also.
  • Some students have been confused by #4(b) on Homework #3. When the problem says "derive similar rules for base 8 numbers" it doesn't mean "derive rules for numbers divisible by 10 and by 5 in base 8". Instead it means "derive rules in base 8 for numbers which have the analogous properties which numbers divisible by 10 and divsible by 5 do in base 10".
  • Printing information is available here.
February 3, 2005
If you want more information about the Detective cluster, please go to: http://www.helpdesk.umd.edu/documentation/unix/cluster.shtml
February 2, 2005
HW02 is out. It is due Wednesday, Feb. 9 at the beginning of your discussion section.
February 2, 2005
Beginning Monday Feb. 7 the discussion sections 0201 and 0202 will be moving to a new room- 2118 CSI (instead of 1121 CSI).
January 26, 2005
HW01 is out. It is due Wednesday, Feb. 2 at the beginning of your discussion section.
January 25, 2005
Welcome to CMSC250. Please check this webpage regularly for announcements and other important information.