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Bebras 2021 - Level 4 Question 6

BEBRAS · Bebras 2021 - Level 4

Question 6

Mat the beaver is organizing a party. He invites his friend Robert and two other beaver families. The first family consists of Papa Jones (husband), Mama Jones (wife), and Harry and Rose, their son and daughter respectively. The second consists of Papa Gray (husband), Mama Gray (wife), and their two daughters Lily and Daisy.

Mat will arrange the seating so no two female beavers sit next to each other; no married couple sit together; and no child sits next to either parent. Which arrangement below is suitable?
  1. Question illustration

    Clockwise from Robert: Robert, Mama Jones, Harry, Rose, Mat, Lily, Papa Jones, Daisy, Papa Gray, Mama Gray.
  2. Question illustration

    Clockwise from Robert: Robert, Mama Jones, Papa Gray, Rose, Harry, Lily, Papa Jones, Daisy, Mat, Mama Gray.
  3. Question illustration

    Clockwise from Robert: Robert, Mama Jones, Mat, Daisy, Papa Jones, Lily, Papa Gray, Rose, Harry, Mama Gray.
  4. Question illustration

    Clockwise from Robert: Robert, Mama Gray, Mat, Lily, Papa Jones, Rose, Harry, Papa Gray, Daisy, Mama Jones.