My dream career in the future is to be a math teacher. I love formulas, arithmetic, equality, and number solving. As a kid, I was a little girl passionate about numbers.

In class, while watching the teachers passionately teaching on the podium, I had a dream of becoming a teacher later. Every day I always try to study hard, read documents and improve my knowledge.

I have observed the teachings of the teachers who have taught me. After that, I researched and learned more about conveying specialized knowledge. I know that to be a teacher, in addition to improving knowledge, there must be patience, confidence, and generosity.

The teacher is a good job but faces a lot of stress, such as grades, teaching methods, and students, … Although this career has many challenges, I always pursue my dream. yourself. It is still a long way to go toward my dream career, and I am sure I will always learn new and necessary things to be a good teacher.

chucbanhoctot

đúng thì cho 1 tick nha =)

#tranhuyentuanh

Ta có: $n\left(\Omega \right)=C_{15}^5=3003$ 

Gọi A là biến cố "Trong 5 học sinh được chọn có ít nhất 4 học sinh nữ".

Ta có thể chọn 4 nữ và 1 nam hoặc chon 5 nữ.

Suy ra $n\left(A\right)=C_9^4.C_6^1+C_9^5=882$

Xác suất của biển cố A là: $P\left(A\right)=\frac{882}{3003}=\frac{42}{143}\approx 0,29$

Ta có: $n\left(\Omega \right)=C_{15}^5=3003$ 

Gọi A là biến cố "Trong 5 học sinh được chọn có ít nhất 4 học sinh nữ".

Ta có thể chọn 4 nữ và 1 nam hoặc chon 5 nữ.

Suy ra $n\left(A\right)=C_9^4.C_6^1+C_9^5=882$

Xác suất của biển cố A là: $P\left(A\right)=\frac{882}{3003}=\frac{42}{143}\approx 0,29$