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IKMC 2009 - Grades 5-6 - Self-study Question 18

IKMC · IKMC 2009 - Grades 5-6 - Self-study

Question 18

Eight cards numbered 1 to 8 are placed in boxes A and B with equal sums. Exactly 3 cards are in A. Which statement is definitely true?
  1. Three cards in B are odd.
  2. Four cards in B are even.
  3. Card 1 is not in B.
  4. Card 2 is in B.
  5. Card 5 is in B.