Skip to content / Đến nội dung
ThichHocToan.com

IKMC 2015 - Grades 11-12 - Self-study Question 29

IKMC · IKMC 2015 - Grades 11-12 - Self-study

Question 29

The 96 members of a counting club stand in a circle and count 1,2,3,… in turn. Anyone saying an even number leaves. Remaining members continue counting (the second round begins with 97) until one remains. Which number did the survivor say in round one?
  1. 1
  2. 17
  3. 33
  4. 65
  5. 95