Lesson Two 1) Set of even numbers: Fifth Primary The Subsets of N Any even number: 0, 2, 4, 6, 8, ……………….. It is usually represented by letter E Book.

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Presentation transcript:

Lesson Two 1) Set of even numbers: Fifth Primary The Subsets of N Any even number: 0, 2, 4, 6, 8, ……………….. It is usually represented by letter E Book P. 4 &P. 5 2) Set of odd numbers: Any odd number: 1, 3, 5, 7, 9, ……………….. It is usually represented by letter O 3) Set of prime numbers: Any prime number: 2, 3, 5, 7, 11, ……………….. It is usually represented by letter P

Notes A. E  O =N B. E ∩ O = ɸ C. N ∩ P = P D. E ∩ P = {2} E. E ∪ N = N F. N ∩ O = O

Solved Examples 1)Complete : A. The set of natural numbers less than 4 is ……………….. B. E  O = ……………….. C. E  O = ……………….. D. The smallest prime number is …………….. E. The set of the natural number is ………….. Set. A. { 0, 1, 2, 3 } B. N C. E D. 2 E. infinite Solution:

1)Use the Venn diagram to complete: A B C A. A  B =……………. B. A ∩ B = …………… C. A ∩ C = …………… D. A ∩ B ∩ C = …………… E. B ∪ C = ……………

2) Put (√) or (×): I. Numbers of pages of a book  N ( ) II. Your cellphone number  N ( ) III. Weight of anything in Kgs  C ( ) IV. The smallest prime number is one. ( ) Homework Book P. 4 and P. 5