Problem C. 1322. (December 2015)
C. 1322. Three consecutive terms of an arithmetic progression of positive integers are written down in a row to form a single number. Find the largest sevendigit number obtained in this way.
Quantum, 1998
(5 pont)
Deadline expired on 11 January 2016.
Statistics:
153 students sent a solution.  
5 points:  66 students. 
4 points:  29 students. 
3 points:  15 students. 
2 points:  1 student. 
1 point:  6 students. 
0 point:  34 students. 
Unfair, not evaluated:  2 solutions. 
