Radio Astronomy Systems Research Group

Log In
Home Sitemap Recent Changes Media Manager

Trace:

wiki:donuts:winter2014

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
wiki:donuts:winter2014 [2014/03/12 14:20]
jmb438
wiki:donuts:winter2014 [2014/04/30 11:15] (current)
jmb438
Line 41: Line 41:
  
 [[wiki:​donuts:​winter2014:​equation|answer]] [[wiki:​donuts:​winter2014:​equation|answer]]
 +
 +===== An Open and Shut Case =====
 +
 +You are standing in a hallway with 100 lockers. You walk down the hall 100 times. The first time, you open every locker. The 2nd time, you close every other locker, starting with locker number 2. The 3rd time you go to every third locker. If the locker is closed, you open it; if it is closed, you open it. You continue on this way opening or closing every nth locker for your nth trip down the hall.
 +
 +After 100 trips down the hall, how many lockers will be left open? ((Josh Sypherd, Mar 12))
 +
 +[[wiki:​donuts:​winter2014:​openandshut|answer]]
 +
 +===== The Red Vase =====
 +
 +By cutting and rearranging the red vase in the image, you can create a square. What is the fewest number of cuts required to do this? ((Jay Brady, Mar. 19))
 +
 +{{:​donutquestions:​donutsvase.jpg?​400|}}
 +
 +
 +[[wiki:​donuts:​winter2014:​redvase|answer]]
 +
 +===== 100 Ping Pong Balls=====
 +
 +To play this game, two players start with a pile of 100 ping pong balls. On each players turn, they must take between 1 and 5 balls. The winner is the player that takes the final ball. If player A goes first, what should be his first move to ensure that he will take the final ball? ((Junming Diao, Mar 26))
 +
 +[[wiki:​donuts:​winter2014:​pingpong:​answer]]
 +
 +===== Trees =====
 +
 +Jack is a farmhand that works for Bill. One day, Bill tells Jack he needs him to plant some trees. They must be planed in 5 straight rows, and each row must have 4 trees. Jack drives out to the field ready to work the next morning. He is surprised when he sees only 10 trees ready to be planted. How does he accomplish his task? ((Jay Brady, Apr 2))
 +
 +[[wiki:​donuts:​winter2014:​trees|answer]]
 +
 +===== Eight Eights =====
 +  8 8 8 8 8 8 8 8 = 1000
 +Using only the '​+'​ operator, how can you make this a valid equation? ((Dr. Warnick, Apr. 16))
 +
 +[[wiki:​donuts:​winter2014:​eighteights|answer]]
 +
 +===== Questions Asked =====
 +|Richard Black | 1 |
 +|Junming Diao  | 2 |
 +| Josh Sypherd | 3 |
 +|Jay Brady     | 3 |
 +|Dr. Warnick ​  | 3 |
 +
wiki/donuts/winter2014.1394655637.txt.gz ยท Last modified: 2014/03/12 14:20 by jmb438