Mai Yen Tra
Giới thiệu về bản thân
Nick phụ : Hoàng Anh Khôi =))))
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2022-08-09 10:57:59
2022-08-08 10:52:33
2022-07-11 15:58:26
2022-07-09 16:38:16
e chx chs bh á c =))
2022-07-08 15:29:20
(2 + 4 + 6 +...+2020) - (1 + 3 + 5 +...+2019) = ?
Vế 1 : 2+4+6+...+2020
SSH= (2020-2) : 2 x 1 = 1009
Tổng : ( 2020+2) x 1009 : 2 = 1020099
Vế 2 : 1 + 3 + 5 +...+2019
SSH = ( 2019 - 1) : 2 x 1 = 1009
Tổng : ( 2019 +1 ) x 1009 : 2 =1019090
1020099 - 1019090 = 1009
2022-07-08 15:16:49
\(\dfrac{135}{120}\)=\(\dfrac{15}{120}\)
\(\dfrac{18}{3}\)=\(\dfrac{15}{3}\)
\(\dfrac{15}{120}\)>\(\dfrac{15}{3}\)=> \(\dfrac{135}{120}\)>\(\dfrac{18}{3}\)
2022-07-08 03:01:32
2022-07-08 03:01:32
2022-07-08 03:01:32
2022-07-08 03:01:32