1/2 + 3/6 + 5/10 + 7/14 + 9/18 + 11/22
= 1/2 + ( 3/6=1/2) + (5/10=1/2) + (7/14 = 1/2) +( 9/18 =1/2) + (11/22 = 1/2)
= 1/2 + 1/2 + 1/2 + 1/2 + 1/2 + 1/2
= 1 + 1 + 1
= 3
Đúng 0
Bình luận (0)