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In a certain code, 'A + B' means 'A is the father of B', 'A - B' means 'A is the sister of B', and 'A * B' means 'A is the mother of B'. In the expression 'P + Q - R * S', how is S related to P?

Competition practiceBlood Relations
  • AGranddaughter
  • BNephew
  • CGrandchild
  • DGrandson

Step-by-Step Solution

P is Q's father, Q is R's sister (so R is also P's child), and R is S's mother; thus S is P's grandchild, gender unknown.
Answer: C) Grandchild

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