Mathematical and Physical Journal
for High Schools
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Problem K. 476. (November 2015)

K. 476. Find all positive integers for which the number obtained by rounding to the nearest thousands is twice the number obtained by rounding to the nearest hundred. (As a rule, numbers ending in 5, 50, 500, \(\displaystyle \dots\;\) round upwards.)

(6 pont)

Deadline expired on December 10, 2015.


Statistics:

131 students sent a solution.
6 points:Bartha Ákos, Bertók Zsanett, Bognár Ádám, Csáfordi József, Csóka Zoárd, Dékány Barnabás, Dobák Dániel, Farkas Norbert, Gálffy Veronika, Gárdonyi Csilla Dóra, Gilicze Márton, Hoffmann Balázs, Kárpáti Kristóf, Kovács 161 Márton Soma, Kovács 576 Kristóf, Kozák Dániel, Kozma Bianka, Kulcsár Szabó András, Meglécz Máté, Mónos Péter, Németh 728 Ágnes Sára, Pálvölgyi Szilveszter, Régely András, Sal Dávid, Szakács 125 Benedek, Tóth Benedek, Varga 294 Ákos, Veres Kata, Zentai Flóra, Zsótér Laura.
5 points:22 students.
4 points:3 students.
3 points:51 students.
2 points:10 students.
1 point:1 student.
0 point:13 students.
Unfair, not evaluated:1 solution.

Problems in Mathematics of KöMaL, November 2015