Read the following information carefully & answer the question given below:
I)'P+Q' means 'P is mother of Q'
II) 'P-Q' means 'Q is sister of P'
III) 'P×Q' means 'P is the brother of Q'
IV) 'P÷Q' means 'Q is the father of P'
Which of the following means R is nephew of T?
A) R×J÷T
B) R÷J-T
C) R-M+T-J
D) R-M×J÷T
Choose the correct answer from the options given below:
Read the following information carefully & answer the question given below:
I)'P+Q' means 'P is mother of Q'
II) 'P-Q' means 'Q is sister of P'
III) 'P×Q' means 'P is the brother of Q'
IV) 'P÷Q' means 'Q is the father of P'
Which of the following means R is nephew of T?
A) R×J÷T
B) R÷J-T
C) R-M+T-J
D) R-M×J÷T
Choose the correct answer from the options given below:
Solution
Option A - R×J÷T: R×J → R is brother of J, and J÷T → T is father of J.
Therefore, R and J are siblings, and T is their father. So R is T's son, not nephew.
Option B - R÷J → J is the father of R, and J-T → T is the sister of J.
Therefore, T is the sister of R's father, making R the nephew of T.
Option C - R−M+T−J
R−M → M is sister of R.
M+T → M is mother of T.
T−J → J is sister of T.
Therefore, R is the sibling of T's mother, so R is T's uncle (assuming R is male). Thus R is uncle of T, not nephew.
Option D - R−M×J÷T
R−M → M is sister of R.
M×J → M is brother of J.
This creates a gender contradiction: M is simultaneously the sister of R and brother of J.
Answer: B) R÷J-T
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