Question

1/1x2 + 1/2x3 + 1/3x4 + ...... + 1/49x50

Ai dung mk se tick

Answer 1

49/50 nha ban!k va ket ban nhe!

Answer 2

49/59 nhé bn tk cho mk nhé

Answer 3

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

1-1/50=49/50

Answer 4

ý lộn 49/50 xin lỗi mk ấn nhầm

Answer 5

Ta có: 1/1x2 + 1/2x3 + 1/3x4 + . . . + 1/49x50 = 1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4 + . . . + 1/49 - 1/50 = 1 - 1/50 = 49/50

Mik làm rùi nên đúng đó, k cho mik nha