Skip to content / Đến nội dung
ThichHocToan.com

Australian AMC 2013 - Junior Question 15

AMC AUSTRALIA · Australian AMC 2013 - Junior

Question 15

Sixteen discs are arranged in four rows of four. The discs have a number on one side and are either red or green on the other. The number shows how many discs touching that disc have green on the other side.

Question illustration

Which of the following statements is true?
  1. All of the rows have the same number of green discs.
  2. Row one has more green discs than any other row.
  3. Row two has more green discs than any other row.
  4. Row three has fewer green discs than any other row.
  5. Row four has fewer green discs than any other row.