e nhập 16 mà cj_{👉🏻👈🏻}

a, Cho \(A=17^{2008}-11^{2008}-3^{1008}\). Tìm chữ số hàng đơn vị của A
b, Cho \(B=17^{25}+24^4-13^{21}\). Chứng tỏ rằng B chia hết cho 10
c, Cho \(C=8^{102}-2^{102}\). Chứng tỏ rằng C chia hết cho 10

Cấu trúc 1: My hobby + tobe + v_ing + O 
Ex: ₁. My hobby is collecting flowers.
      ₂. My hobby is making crafts.
      ₃. My hobby is reading newspapers.

Cấu trúc 2: S+ like(s)+ V_ing + O
Ex: ₁. She likes growing plants and vegetables.
      ₂. My sisters like playing with small animals.
      ₃. I like baking cakes.

=> \(x=\dfrac{16}{55}\)

\(\dfrac{9}{7}-\dfrac{2}{5}:\dfrac{1}{2}\)

\(=\dfrac{9}{7}-\dfrac{2}{5}\times\dfrac{2}{1}\)

\(=\dfrac{9}{7}-\dfrac{4}{5}\)

\(=\dfrac{45}{35}-\dfrac{28}{35}\)

\(=\dfrac{17}{35}\)

Chu vi mảnh đất là:
      \(\left(3\times1000\right)+\left(4\times1000\right)+\left(5\times1000\right)=12000\) (cm) => \(12\) (km)
             Đ/s: ...

\(3\dfrac{2}{5}=\dfrac{3\times5+2}{5}=\dfrac{17}{5}\)                                          \(2\dfrac{4}{9}=\dfrac{2\times9+4}{9}=\dfrac{22}{9}\)
 

\(7\dfrac{3}{8}=\dfrac{7\times8+3}{8}=\dfrac{59}{8}\)                                          \(15\dfrac{1}{10}=\dfrac{15\times10+1}{10}=\dfrac{151}{10}\)

i, \(I=\dfrac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)                                              k, \(K=1+5+5^2+...+5^{100}\)
 

m, \(M=1+3^2+3^4+3^6+...+3^{100}\)