Question

Ghi kết quả của phép tính sau: 1/1x2 = 1/2x3 + 1/3x4 + ... + 1/49x50

Answer 1

khó quá sai thì thôi nha

= 1/1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 + .... + 1/49 - 1/50

= 1/1 - 1/50

= 49/50

Answer 2

1/1.2 + 1/2.3 + 1/3.4 +.....+ 1/49.50

= 1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 +......+ 1/49 - 1/50

= 1 - 1/50

= 49/50

Answer 3

1/1.2 + 1/2.3 + 1/3.4 +.....+ 1/49.50 = 1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 +......+ 1/49 - 1/50 = 1 - 1/50 = 49/50 

Answer 4

1/1.2 + 1/2.3 + 1/3.4 +.....+ 1/49.50

= 1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 +......+ 1/49 - 1/50 

= 1 - 1/50 

= 49/50 

Answer 5

1/1.2 + 1/2.3 + 1/3.4 +.....+ 1/49.50

= 1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 +......+ 1/49 - 1/50 

= 1 - 1/50 

= 49/50 

Answer 6

49/50