Question

ans the question fast​

Answer 1

ANSWER

4. none of these

5.equivalence relation

6.none of these

EXPLANATION

• 4.for natural numbers
• for x < y x cannot be equal to y so it is not reflexive

2 <3 but 3 not less then 2

so it is not symmeteic

• 5. every line parallel to each other satisfy condition of equivalence relation

• 6. it is symmetric and transitive but this is not in option so it answer is none of these