In a certain coding system, 'a+b' means 'a' is the mother of 'b'. What does 'p+q+r' mean?
Q1. In a certain coding system, 'a+b' means 'a' is the mother of 'b'. What does 'p+q+r' mean?
Answer: p is the grandmother of r
Explanation: Since 'p+q' means 'p' is the mother of 'q', and 'q+r' means 'q' is the mother of 'r', 'p+q+r' implies 'p' is the grandmother of 'r'.