Do \(\overline{x34y}\) chia 2; 5 đều dư 1 ⇒ y = 1.

Mà \(\overline{x34y}\) chia hết cho 9 nên:

\(x+3+4+y=x+7+1=x+8\) chia hết cho 9

\(\Rightarrow x=1\) 

Chia nhỏ câu hỏi ra nhé bạn ơi.

\(Q< \dfrac{1}{4}+\dfrac{1}{2.3}+\dfrac{1}{3.4}+...+\dfrac{1}{99.100}\)

\(Q< \dfrac{1}{4}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+...+\dfrac{1}{99}-\dfrac{1}{100}\)

\(Q< \dfrac{1}{4}+\dfrac{1}{2}-\dfrac{1}{100}\)

\(Q< \dfrac{3}{4}-\dfrac{1}{100}\)

\(\Rightarrow Q< \dfrac{3}{4}\)

Em đăng kí nhận thưởng bằng coin ạ.

Em đăng kí nhận thưởng câu lạc bộ chiến binh OLM tháng 8.

1 + 1 = 2.

Dãy số: 2; 7; 11; 16; 22; ...

- Khoảng cách giữa mỗi số hạng là: 5

⇒ Số hạng thứ n = (n - 1) x 5 + 2

\(\sqrt{\left(x-1\right)^3}=\sqrt{4^3}\)

\(\Rightarrow x-1=4\)

\(x=4+1\)

\(x=5\)

Vậy \(x=5\)

1. She is confident in her ability.

2. I don't want you to be curious about my private life.

3. Is she serious about learning English? Yes.

4. It's time we bought a better dictionary.

5. It's generous of your sister to help me with my project.

6. Would you please pass the notebook next to the globe?

7. Can we watch the final match live on TV? Certainly.

8. Nearly five hundred students will take part in the ceremony next Monday.

have never been.