Problem C. 1311. (October 2015)
C. 1311. Each of the numbers \(\displaystyle \frac{1}{3}\); 0,375; 1; 1,4; \(\displaystyle \sqrt{2}\); \(\displaystyle \frac{13}{8}\); 2; \(\displaystyle \frac{13}{5}\); \(\displaystyle \frac{8}{3}\); 3; 4; \(\displaystyle \sqrt{18}\); \(\displaystyle \sqrt{32}\) is given either a plus sign or a minus sign, and then the sum is calculated. In how many different ways may we choose the signs to get \(\displaystyle 1\) as a sum?
(5 pont)
Deadline expired on November 10, 2015.
Statistics:
225 students sent a solution. 5 points: 78 students. 4 points: 41 students. 3 points: 68 students. 2 points: 27 students. 1 point: 4 students. 0 point: 3 students. Unfair, not evaluated: 4 solutionss.
Problems in Mathematics of KöMaL, October 2015