Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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# Problem C. 1255. (November 2014)

C. 1255. Determine the four-digit number $\displaystyle \overline{abcd}$, given that in the equation $\displaystyle {n^4=\overline{a6b\;c4d\;641}}$ $\displaystyle n$ denotes a positive integer with the sequence of digits increasing left to right.

(5 pont)

Deadline expired on December 10, 2014.

### Statistics:

 225 students sent a solution. 5 points: 143 students. 4 points: 51 students. 3 points: 13 students. 2 points: 3 students. 1 point: 2 students. 0 point: 3 students. Unfair, not evaluated: 10 solutions.

Problems in Mathematics of KöMaL, November 2014