Sorry for Asking Stupid questions from Genius people like you Are.

ROBOT.LK has been created to help people with these types of questions. It doesn't matter you are a genius or not for ROBOT.LK. What matters is you try to share what you know as much as possible with other people.

Okay.. Let's get on with your questions.

Specifying Sets

This is about Set theory. Don't worry about the terms (names). But make sure you learn the word.

This is about "කුලක" you learned for O/Ls. If you can't remember Set operations, start from the O/L book. A/L guys knows more operations but we can learn those step by step.

Learn the terms first. Intersection, Union, Empty set, Universal set. All these covered in Sinhala in O/L I guess. Learn the symbols that represent these. If you can refer the A/L Maths part on set theory, I'm that cover all these things. However since it is required to know the theory well, refer to following wiki pages. Those are very good.

http://en.wikipedia.org/wiki/Set_(mathematics)
Relation

Relations - Definitions

Again under the set theory heading.

http://en.wikipedia.org/wiki/Relation_(mathematics)
Composition of Relations

http://en.wikipedia.org/wiki/Composition_of_relations
Direct Graph

http://en.wikipedia.org/wiki/Directed_graph
Reflexive Relations

http://en.wikipedia.org/wiki/Reflexive_relation
Symmetric Relations

http://en.wikipedia.org/wiki/Symmetric_relation
Transitive Relations

http://en.wikipedia.org/wiki/Transitive_relation
Equivalence Relations

http://en.wikipedia.org/wiki/Equivalence_relation
Equivalence Classes

http://en.wikipedia.org/wiki/Equivalence_class
Finally under wikibooks, you have everything again.

Index page:

http://en.wikibooks.org/wiki/Category:Set_Theory
Introduction:

http://en.wikibooks.org/wiki/Set_Theory/Sets
Relations:

http://en.wikibooks.org/wiki/Set_Theory/Relations
After you learn these, you will find answering questions for the model paper is simply nothing.