Skip to main content
OlympiadHQ

Browse · harp

Print

jmc

geometry junior

Problem

The figure may be folded along the lines shown to form a number cube. Three number faces come together at each corner of the cube. What is the largest sum of three numbers whose faces come together at a corner?
problem
(A)
(B)
(C)
(D)
Solution
It is clear that , , and will not come together to get a sum of . The faces , , and come together at a common vertex, making the maximal sum .
Final answer
D