New Puzzle

 [Explanation] [Get Another Puzzle]

Question 1

Given numbers: 2, 4, 6, 10
Result of expression: 14
Number of possible orderings and choices of operators:

Question 2

Given numbers: 4, 7, 8, 9
Result of expression: 10
Number of possible orderings and choices of operators:

Question 3

Given numbers: 3, 8, 9, 9
Result of expression: 5
Number of possible orderings and choices of operators:


Questions and suggestions to Frank.Luebeck@Math.RWTH-Aachen.De.