M is N's sister. M is P's sister. To find out how is N
related to P which of the following is the minimum
further necessary information to answer the questions?
I. P's Gender
II. N's Gender
(a) Either I or II is necessary
(b) Only II is necessary
(c) Both I and II are necessary
(d) Only I is necessary
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Answer:
(a)either I or II is necessary
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