The numbers $$\(12,34,56,78,90\)$$ are five two-digit numbers that use all ten digits. Which five two-digit numbers that use all ten digits have the largest possible product? Please enter the average of the five two-digit numbers.
A.
72
B.
74
C.
76
D.
None of these
Exam No：2022 First Round Grades 8-9 Year：2022 Question No：28
Answer:
A
Knowledge points:
G8-9 - Number Theory - Digit Logic & Manipulation
Solution:
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