Question

2) Upendra has two daughters (Sukhalata and Punyalata) and one son (Sukumar). Sukumar has one son
named Satyajit. Punyalata has two daughters (Kalyani and Nalini).
This family tree has been shown in the figure below.
Let us define a relation R as follows,
• R:= {(A, B) A and B are first cousins, i.e. their parents are siblings}.
• S:= {(A,B) A is son of B}
Upendra
Sukhalata
Sukumar
Punyalata
Satyajit
Kalyani
Nalini
Which of the following is (are) true?'
1)(Satyajit, Sukuman) E S but (Sukumar, Satyajit) belong to S
2) R is transitive relation,
3)(Sukumar, Upendra) belongs to S and (Satyajit, Sukumar) € S but (Satyajit
, Upendra) belong to S
4)(satyajit,sukhalata ) is neither R nor S​

Answer 1

Answer: 1 ,3

Step-by-step explanation:  

option 3 is correct because

S:= {(A,B) A is son of B}

sukumar is a son of upendra € S , satyajit is a son of sukumar  € S

but you can not say  becaude satyajit is a grand  son of upendra

Answer 2

Answer:

1,3,4

Step-by-step explanation:

option 4 coz sukhalata is part of none of the given set