Sets Relations And Functions Question 61

Question: Let $R$ be a relation on the set $N$ be defined by $\{(x, y) \mid x, y \in N, 2 x+y=41\}$. Then prove that the $R$ is

Options:

A) Reflexive

B) Symmetric

C) Transitive

D) None of these

Show Answer

Answer:

Correct Answer: D

Solution:

  • On the set N of natural numbers,

R={$ (x,y):x,y\in N,2x+y=41 $ } .

Since $ (1,1)\notin R $ as $ 2.1+1=3\ne 41 $ .

So, R is not reflexive.

$ (1,,39)\in R $ but $ (39,,1)\notin R $ .

So R is not symmetric (20, 1) (1, 39) $ \in R $ .

But $ (20,39)\notin R $ ,

So R is not transitive.