Skip to content / Đến nội dung
ThichHocToan.com

TIMO 2019 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 3 Question 2

TIMO · TIMO 2019 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 3

Question 2

$n$ straight lines cut a circle into 232 regions. Find the minimum possible $n$.
  1. 18
  2. 19
  3. 20
  4. 21