How many presidents elected in years ending in zero since 1840 have died in office?         

Câu hỏi :

How many presidents elected in years ending in zero since 1840 have died in office?         

A 5                                       

B 7                                     

C 4                                      

D 3

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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