All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
Broken Keyboard (Posted on 2009-04-06) Difficulty: 2 of 5
The up arrow on my keyboard died. One place where I often use it is when entering course grades.

Before if I had a bunch of graded tests for a class and need to enter them into my grading program I would simply click the blank for the student, enter the grade, then move up or down with the arrows to the student for next test in my pile.

Now I can move down with the down arrow but to go up the list I have to reach over to my mouse to click the correct spot which takes a bit longer.

My question is: for a class of size n, how many times should I expect to have to use my mouse to move up the list? (Assume the tests are in a completely random order.)

No Solution Yet Submitted by Jer    
Rating: 3.0000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolutionRobby Goetschalckx2009-04-06 14:55:43
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information