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Unit 1

Unit 1. The set of Natural numbers “N”. THE SET OF COUNTING NUMBERS. C={1,2,3,4,5,6,………}. The set of natural numbers “N” N= {0,1,2,3,4,5,……..}. Remarks:. 0 is the smallest natural number. N ᴖ C =C = {1,2,3,4,…..} N ᴜ C = N = {0,1,2,3,4,………..}.

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Unit 1

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  1. Unit 1 The set of Natural numbers “N”

  2. THE SET OF COUNTING NUMBERS C={1,2,3,4,5,6,………}

  3. The set of natural numbers “N” N= {0,1,2,3,4,5,……..}

  4. Remarks: 0 is the smallest natural number N ᴖ C =C = {1,2,3,4,…..} N ᴜ C = N = {0,1,2,3,4,………..} 1 is the smallest counting number

  5. WRITE BY LISTING METHOD: A-the set of natural numbers less than 5 A= {0,1,2,3,4 } B –the set of natural numbers more than 4 B = { 5 , 6 , 7 , 8,……………} C- the set of natural numbers lies between the origin and 3 C ={ 1 , 2 } D – the set of natural numbers not less than 4 D= { 4 , 5 ,6 , 7 ,…………..}

  6. Which of the following is anatural number: A- 12 N B- 3.5 N NC- 3654140 N d- 8/2

  7. Put (√) or (X): 1- N – C = ᴓ ( X ) 2- C – N ={0} ( X ) 3- zero is the least natural Number (√ )

  8. Representing natural numbers on the number line 0 1 2 3 4 5 ……..

  9. The natural numbers less than 4 0 1 2 3 4 5 ……..

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