SEAMO 2017 — Paper E — Lớp 9–10 Câu hỏi 1

Tính $\left(1-\frac1{2^2}\right)\left(1-\frac1{3^2}\right)\cdots\left(1-\frac1{2006^2}\right)\left(1-\frac1{2007^2}\right)$.