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NO.1311
中等
00:00
本题平均耗时：1分30秒
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正确率：63%
a=3^11 + 3^16 + 3^19 + 3^23
Quantity A
The units digit of a
Quantity B
3
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
Select one answer choice.
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