Solution Step 0/0
1, 2, and 3 are placed in the vertices of a triangle. 4, 5, 6, 7, 8, and 9 can be added along the sides of the triangle so that the numbers along each side add to 17.
Which two digits can not be spotted on one side?
Which two digits can not be spotted on one side?
Explanations
6 and 9 will be on different sides.[After Boris A. Kordemsky. The Moscow Puzzles: 359 mathematical recreations. 1972]
Check 4 and 8
Check 6 and 7
Check 5 and 9
Check 6 and 9
