Question

Ngày 5/9/2012 là thứ tư.Hỏi ngày 5/9/2020 là thứ mấy?

Answer 1

 Từ 2012 đến 2020 có 8 năm <=> có 2920 ngày + 2 ngày của năm nhuần 2012, 2016. 
Vậy tổng cộng từ 5/9/2012 đến 5/9/2020 có 2922 ngày <=> 417 tuần + 3 ngày <=> 417 ngày thứ tư + 3 ngày 

Đáp số: 
Ngày 5/9/2020 là ngày thứ bảy

Answer 2

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