Question

[Đào Văn Thái]

tính nhanh

\(\frac{3\text{x}5\text{x}7\text{x}11\text{x}13\text{x}37-10101}{1212120+40404}\)

ai làm đúng đầu tiên cho 2 like

Answer 1

[Huy Anh Lê]

\(=\frac{3\text{x}5x7x11\text{x}13\text{x}37-3\text{x}7\text{x}13\text{x}37}{2^3x3^2x5\text{x}7\text{x}13\text{x}37+2^2x3\text{x}7\text{x}13\text{x}37}=\frac{3\text{x}7\text{x}13\text{x}37\left(5\text{x}11-1\right)}{2^2x3\text{x}7\text{x}13\text{x}37\left(2\text{x}3\text{x}5+1\right)}\)

\(=\frac{54}{2^2x31}=\frac{54}{124}=\frac{27}{62}\) thử lại kết quả rồi nhé

Answer 2

[Phan Anh Trường]

27/62