My school's name is My Tan Secondary School. I really love my school but if it is more modern, more convinient, more suitable and more beautiful that of course i will love it so much. I thought about it when i sleeping. It has a auto-gate. When we go toward it, it will open and greet us. Each classrooms will have a air conditioner. We can use it when we feel hot. And in the garden, it will water by itself, we will not feel tired. So cool!

Now, I am out of time to write more. I hope in the near future, the thing i wish will be the truth. And I hope you will clike "Đúng" for me.

Gọi 3 số tự nhiên liên tiếp là:a;a+1;a+2

Tổng 3 số đó là:a+(a+1)+(a+2)=(a+a+a)+(1+2)=3a+3=24

=>3a=21

=>a=7

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