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If (i) M is brother of N. (ii) B is brother of N and (iii) M is brother of D, then which of the following statements is definitely true?

If (i) M is brother of N. (ii) B is brother of N and (iii) M is brother of D, then which of the following statements is definitely true? Correct Answer M is brother of B.

By using the symbols in the table given below, we can draw the following family tree:

[ alt="F1 Sweta Madhuri 25.05.2021 D7" src="//storage.googleapis.com/tb-img/production/21/05/F1_Sweta_Madhuri_25.05.2021_D7.png" style="width: 162px; height: 32px;">

1) N is brother of B. → False (As, gender of ‘N’ is not known)

2) N is brother of D. → False (As, gender of ‘N’ is not known)

3) M is brother of B. → True

4) None of these → False (As ‘3’ is true)

Hence, ‘M is brother of B’ is the correct answer.

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