My local ice cream shop offers 20 different flavors of ice cream. If I want two scoops of ice cream, each scoop a different flavor, how many combinations of two scoops of ice cream are possible?
A.
39
B.
40
C.
190
D.
380
Exam No：2021 First Round Grade 5 Year：2021 Question No：24
Answer:
D
Knowledge points:
G5 - Data - Systematic Listing & Combinations
Solution:
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