Problem K. 433. (November 2014)
K. 433. We have four objects that look all alike, but weigh 3, 5, 8 and 11 kg. We also have an equalarm balance without extra weights.
\(\displaystyle a)\) By using the balance only twice, how can we identify the 11kg object?
\(\displaystyle b)\) With two further measurements, how can we determine the masses of the other objects, too?
(6 pont)
Deadline expired on 10 December 2014.
Statistics:
122 students sent a solution.  
6 points:  86 students. 
5 points:  5 students. 
4 points:  1 student. 
3 points:  3 students. 
2 points:  17 students. 
1 point:  3 students. 
0 point:  5 students. 
Unfair, not evaluated:  2 solutions. 
