Question

[Nguyễn Cẩm Hương]

\(\frac{5}{1.4}+\frac{5}{4.7}+.....+\frac{5}{100.103}\)

Answer 1

[Phương Trình Hai Ẩn]

=5/3.(1/1-1/4+1/4-1/7+...+1/100-1/103)

=5/3.(1/1-1/103)

=5/3.102/103

=170/103

Answer 2

[Nguyễn Hoàng Tiến]

=5/3.(1/1-1/4+1/4-1/7+...+1/100-1/103)

=5/3.(1/1-1/103)

=5/3.102/103

=170/103