Prashnikaप्रश्निका
Code
About
‹ Back to the paper
Mathematics20211 markMCQRelations and Functions

Choose the correct option.

Let R be the relation in the set N, given by R = {(x, y) : x = y + 3 ∧ y > 5}.

Let $R$ be the relation in the set $N$, given by $R = \{(x, y) : x = y + 3 \wedge y > 5\}$.
  • (a)$(7, 4) \in R$.
  • (b)$(9, 6) \in R$.
  • (c)$(4, 1) \in R$.
  • (d)$(8, 5) \in R$.

Answer

Answer

Correct option: (b)

Answer: (b) $(9, 6) \in R$. For $(9, 6)$: $9 = 6 + 3$ and $6 > 5$, so both conditions hold. The other pairs fail: $(7,4)$ has $4 \not> 5$; $(4,1)$ has $1 \not> 5$; $(8,5)$ has $5 \not> 5$.