Question : Directions: A + B means A is the brother of B; A – B means A is the mother of B; A × B means A is the husband of B; A ÷ B means A is the sister of B. If C ÷ B – E + A × F – D, then which of the following statements is NOT correct?
Option 1: D is the daughter of B
Option 2: C is the sister of the mother of A
Option 3: F is the wife of the son of B
Option 4: B is the mother of A
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Correct Answer: D is the daughter of B
Solution : Given: C ÷ B – E + A × F – D
As per the given information, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female in the figure. Let's check the options – First option: D is the daughter of B – From the above family tree, it's clear that D is either the daughter or son of A and F. Therefore, this option is incorrect. Second option: C is the sister of the mother of A – From the above family tree, it's clear that B is the mother of E and E is the brother of A. So, B is the mother of A and E both. So, C is the sister of B, the mother of A. Therefore, this option is correct. Third option: F is the wife of the son of B – From the above family tree, it's clear that A is the son of B, and F is the wife of A. So, F is the wife of the son of B. Therefore, this option is correct. Fourth option: B is the mother of A – From the above family tree, it's clear that B is the mother of E and E is the brother of A. So, B is the mother of A and E both. Therefore, this option is correct.
So, only the first option does not fulfill the relation as per the family tree. Hence, the first option is correct.
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