Mathematical and Physical Journal
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Problem K. 455. (February 2015)

K. 455. The representation of 2015 in binary notation is a palindrome number: 11111011111. How many years are there in the 21st century whose binary representations are also palindromes?

Based on the idea of S. Kiss, Nyíregyháza

(6 pont)

Deadline expired on March 10, 2015.


Statistics:

60 students sent a solution.
6 points:Agócs Katinka, Benda Orsolya, Csiszer Bence, Csuha Boglárka, Dévény Csaba, Farkas Lilla, Fekete Balázs Attila, János Zsuzsa Anna, Korpás Isabel, Márton Anna, Mihályházi Péter, Nagy Viktor, Németh Csilla Márta, Páhoki Tamás, Perényi Gellért, Rátkai Petra, Rimai 217 Dániel, Simon411 Máté, Sinkó Zsófia, Sipos Fanni Emma, Sisák László Sándor, Slenker Balázs, Szakali Benedek, Szarka Álmos, Szilágyi Botond, Tamási Kristóf Áron, Tószegi Fanni, Valkó Bence, Varga 274 Tamás.
5 points:Kovács 124 Marcell, Kovács András, Kozma Dávid Márk, Pál 965 Zsigmond, Szalay Gergő.
4 points:11 students.
3 points:1 student.
2 points:6 students.
1 point:7 students.
0 point:1 student.

Problems in Mathematics of KöMaL, February 2015