92 + 93 + 94 + 95 + 96 + 97 + 98 + 99 + 100
= (92 + 100) + (93 + 99) + (94 + 98) + (95 + 97) + 96
= 192 + 192 + 192 + 192 + 96
= 768 + 96
= 864
92 + 93 + 94 + 95 + 96 + 97 + 98 + 99 + 100 = 864
92+93+94+95+96+97+98+99+100=864
Tk cho mk nhé!
92+93+94+95+96+97+98+99+100=864 nha bạn
tk mk nha
thank you bạn
(^_^)
92 + 93 + 94 + 95 + 96 + 97 + 98 + 99 + 100
= (92 + 98) + (93 + 97) + (94 + 96) + 95 + 99 + 100
= 190 + 190 + 190 + 95 + 99 + 100
= 190 x 3 + 95 + 99 + 100
= 570 + 95 + 99 + 100
= 665 + 99 + 100
= 765 + 99
= 864
92+93+94+95+96+97+98+99+100=864
k nha
thank you 
