If A-B means -A is the mother of B- A- B means -A is the brother of B- A- B means -A is the son of B- and A-B means -A is the sister of B- then which of the following means - -C is the sister of D-

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If A+B means ...

Question

If A+B means 'A is the mother of B'; $A \div B$ means 'A is the brother of B'; $A \times B$ means 'A is the son of B' and A-B means 'A is the sister of B' then which of the following means - 'C is the sister of D'?

D-C

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D \times P - C

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C - P \div D

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P + D \div C

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D - P \div C

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Solution

The correct option is C $C - P \div D$
(a) D-C means D is the sister of C From figure, D is the sister of C but it is not necessary that C is the sister of D. C may also be brother of D. Hence , option (a) is not correct.
(b) $D \times P - C$
(1) $D \times P$ means D is the son of P
(2) $P \div D$ means P is the brother of D From Figure, if P is brother of D, then either D will be a male or a female. If D is a male , then C is the sister of D and if D is female then also C is the sister of D. Hence option (c) is correct.
(d) $P + D \div C$
(1) $P \div C$ means P is the mother of D.
(2) $D \div C$ means D is the brother of C. From figure, D is the brother of C, so C may be a male or female . Hence, option (d) is not correct.
(e) $D - P \div C$
(1)D-P means D is the sister of P.
(2) $P \div C$ means P is the brother of C. From Figure, P is brother of C, so C may be a male or female. Hence, C is the sister of D. Hence, option (e) is not correct. Thus , (c) is correct answer.

Suggest Corrections

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If A+B means 'A is the mother of B'; A÷B means 'A is the brother of B'; A×B means 'A is the son of B' and A-B means 'A is the sister of B' then which of the following means - 'C is the sister of D'?

If A+B means 'A is the mother of B'; $A \div B$ means 'A is the brother of B'; $A \times B$ means 'A is the son of B' and A-B means 'A is the sister of B' then which of the following means - 'C is the sister of D'?