Question : Directions: If L × M means that L is the mother of M, L + M means that L is the father of M, and L ÷ M means that L is the sister of M, then which of the following expressions shows that P is the father of R?
Option 1: P + Q ÷ R
Option 2: P ÷ R + Q
Option 3: Q + P ÷ R
Option 4: P + Q × R
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Correct Answer: P + Q ÷ R
Solution :
Let's check the given options –
First option:
P + Q ÷ R
According to the given expression, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female. From the above family tree, it is evident that P is the father of R.
Second option:
P ÷ R + Q
According to the given expression, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female. From the above family tree, it is evident that P is the sister of R.
Third option:
Q + P ÷ R
According to the given expression, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female. From the above family tree, it is evident that P is the sister of R.
Fourth option:
P + Q × R
According to the given expression, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female. From the above family tree, it is evident that P is the maternal grandfather of R.
So, only the expression in the first option satisfies the relation given in the question. Hence, the first option is correct.
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