Question

Tính tổng:

1/1.2+1/2.3+1/3.4+1/4.5+1/5.6

Answer 1

Khônh hiểu

Answer 2

437/60

Answer 3

=1/1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6 =1/2-1/6 =5/6

Answer 4

1/1.2 + 1/2.3 + 1/3.4 +1/4.5 + 1/5.6

= 1- 1/2 +1/2 - 1/3 +1/3 - 1/4 +1/4 -1/5 +1/5 -1/6

=1-1/6 = 5/6

k cho mình nha