A is father of X; B is mother of Y. The sister of X is Z and Y. Which of the following statements is definitely not true ?
  • 1B is the mother of Z
  • 2X is the sister of Z
  • 3Y is the son of A
  • 4B has one daughter
Answer:- 1
Explanation:-

Solution:
A is the father of X and Y is the sister of X. So, Y is the daughter of A.

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