Skip to content / Đến nội dung
ThichHocToan.com

HKIMO 2026 Grade 5 National Preliminary Set 02 Question 10

HKIMO · HKIMO 2026 Grade 5 National Preliminary Set 02

Question 10

Find the value of $\frac1{1\times2}+\frac1{2\times3}+\cdots+\frac1{96\times97}+\frac1{97\times98}$.
  1. $\frac78$
  2. $\frac1{98}$
  3. $\frac{98}{97}$
  4. $\frac{97}{98}$