Question

A= 3/4x8/9x15/16x.......x 2499/2500

nhanh mk k cho

Answer 1

A= 3/4x8/9x15/16x.......x 2499/2500

A=\(\frac{3}{4}x\frac{2.4}{3.3}x\frac{3.5}{4.4}x...x\frac{49.51}{50.50}\)

A=\(\frac{3x2x4x3x5x...x49x51}{4x3x3x4x4x...x50x50}\)

A=\(\frac{2x51}{4x50}\)

A=\(\frac{51}{100}\)

Answer 2

A= \(=\frac{3\times1}{2\times2}\times\frac{4\times2}{3\times3}\times\frac{3\times5}{4\times4}\times....\times\frac{49\times51}{50\times50}\)

\(=\frac{3\times1\times4\times2\times3\times5\times....\times49\times51}{2\times2\times3\times3\times4\times4\times....\times50\times50}\)

xong loai di nhung so o dang trc va nhan vs 51/50 va ra kq

xin loi vik ko lam het vik qua ban mong chon mik