Types of Numbers and the Set


Math Class 9
1. Set of natural numbers:




Math Class 9
2. Set of integers:




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3. Set of Prime numbers:




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4. Set of odd numbers:




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5. Set of even numbers:




6. Set of whole numbers:




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7. Set of rational numbers:




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8. Set of irrational numbers




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9. Set of real numbers:




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10. _ _ _ _ _ _ _ of any set can be written in any sequence.




Math Class 9
11. N=[1, 2, 3, 4, ..........]




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12. W=[0, 1, 2, 3, 4, ..................]




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13. Z=[.........-3, -2, -1, 0, 1, 2, 3, 4, 5, ..........]




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14. P=[2, 3, 5, 7, 11, ...]




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15. O=[1, 3, 5, 7, 9, .........]




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16. E=[2, 4, 6, 8, ...........]




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17. Q




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18. Q'




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19. R = Q È Q'




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20. Writing a set in the form of [1, 2, 3, 4, 5,] is called _ _ _ _ _ _ _ _ .




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21. A set is a group of _ _ _ _ _ _ .




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22. A group of elements is called a _ _ _ _ .




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23. Two methods of presenting a set are _______ and tabular method.




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24. If number of elements in A are 3 and in set B is 4 then number of elements in A x B are




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25. If N= set of Natural numbers, P= Set of Prime Numbers, then NÇP is




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26. The set of first five positive integers is a tabular method of presenting a set.


27. Set of integer is an infinite set.


28. Every set is a subset and proper subset of itself.


29. If the number of elements in set "A" is "n" then the number of elements in P(A) is 2n.


30. The union of rational and irrational numbers is called ______________Number.





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