alexgal
alexgal alexgal
  • 13-02-2017
  • Mathematics
contestada

Cifra x pentru fiecare dintre numerele 21x 33x si 5x4 este divizibil cu 4 și cu 3 este

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pelletier956
pelletier956 pelletier956
  • 17-02-2017
Just explain the question in English
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georgescuv678
georgescuv678 georgescuv678
  • 14-11-2018

21x este divizibil cu 4

=> x apartine {2,6}

21x este divizibil cu 3

=> x apartine {0,3,6,9}

=> 21x (divizibil cu 4 si 3) este 216


33x este divizibil cu 4

=> x apartine {2,6}

33x este divizibil cu 3

=> x apartine {0,3,6,9}

=> 33x (divizibil cu 4 si 3) este 336


5x4 este divizibil cu 4

=> x apartine {0,2,4,6,8}

5x4 este divizibil cu 3

=> x apartine {0,3,6,9}

=> 5x4 (divizibil cu 4 si 3) este 504 sau 564




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