Given four different integers, at most how many different sums can be formed by choosing two, three, or four of them and finding each sum?
A.
8
B.
9
C.
10
D.
11
Exam No：2018 First Round Grade 4 Year：2018 Question No：17
Answer:
D
Knowledge points:
G4 - Number Sense - Systematic Counting
Solution:
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