Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem K. 139. (November 2007)

K. 139. Replace each circle between the numbers by the symbol of one of the basic operations so that the result is 100. (Note that brackets are not allowed.)


1\ \circ \ 2\ \circ \ 3\ \circ \ 4\ \circ \ 5\ \circ \ 6\ \circ \ 7\ \circ \ 8\ \circ \ 9 =
100

(6 pont)

Deadline expired on December 10, 2007.


Sorry, the solution is available only in Hungarian. Google translation

Megoldás: 1+2+3+4+5+6+7+8.9=100 vagy 1.2.3+4+5+6+7+8.9=100.


Statistics:

233 students sent a solution.
6 points:226 students.
5 points:1 student.
4 points:2 students.
0 point:4 students.

Problems in Mathematics of KöMaL, November 2007