Aspire Faculty ID #18026 · Topic: JEE Main 2026 (23 January Evening Shift) · Just now
JEE Main 2026 (23 January Evening Shift)

Let $A = {0,1,2,\ldots,9}$. Let $R$ be a relation on $A$ defined by $(x,y) \in R$ iff $|x-y|$ is a multiple of $3$. Given below are two statements: Statement I: $n(R) = 36$ Statement II: $R$ is an equivalence relation Choose the correct option:

Solution

Classes:

$0,3,6,9 \Rightarrow 4$

$1,4,7 \Rightarrow 3$

$2,5,8 \Rightarrow 3$

Total relations

$= 4^2 + 3^2 + 3^2 = 16 + 9 + 9 = 34$

So Statement I false

Relation is reflexive, symmetric, transitive ⇒ equivalence

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