HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
A
There are many program on T.V such us,films,cartoons,sport and news.I like watching cartoons best.I usually watch in the livingroom with my younger brother.We play at 6:30 in the evening,watching cartoon is very happy and exciting.I can relax after school.
Bài tham khảo nè!!!
It's me
Xem lại đề, 99.100 mới đúng!
Đặt 1.2 + 2.3 + 3.4 + ... + 99.100 = A
Ta có 3A = 1.2.3 + 2.3.3 + 3.4.3 + ... + 99.100.3
= 1.2.(3 - 0) + 2.3.(4 - 1) + 3.4.(5 - 2) + ... + 99.100.(101 - 98)
= 1.2.3 + 2.3.4 - 1.2.3 + 3.4.5 - 2.3.4 + ... + 99.100.101 - 98.99.100
=> 3A = 99.100.101
=> A = 33.100.101 = 333300
1.She is a teacher
2.Her eyes are black
3.No,she doesn't
Tick nha!!!
those moi dung chu
It's me.
1.fish
2.sandwich