Tổng đó là: \(\frac{1}{1.2}+\frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.5}+...+\frac{1}{31.32}\)
31/32 = 1/32 + 30/32
= 1/32 + 15/16
= 1/32 + 7/16 + 8/16
= 1/32 + 7/16 + 1/2
= 1/32 + 1/2 + 5/16 + 2/16
= 1/32 + 1/2 + 5/16 + 1/8
= 1/32 + 1/2 + 1/8 + 1/16 + 4/16
= 1/32 + 1/2 + 1/8 + 1/16 + 1/4
hay viet phan so 31/32 thanh tong cua cac phan so co tu bang 1 va mau khac nhau
31/32 = 1/32 + 30/32
= 1/32 + 15/16
= 1/32 + 7/16 + 8/16
= 1/32 + 7/16 + 1/2
= 1/32 + 1/2 + 5/16 + 2/16
= 1/32 + 1/2 + 5/16 + 1/8
= 1/32 + 1/2 + 1/8 + 1/16 + 4/16
= 1/32 + 1/2 + 1/8 + 1/16 + 1/4