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09-09-2020
Mathematics

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how do you know that 5, 7, 8, 9, 10, and 11 are not factors of 12?

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ZJSG09112007 ZJSG09112007

09-09-2020

Answer :

Factors of 12 are

[tex] 1 \times 12 \\ 2 \times 6 \\ 3 \times 4. [/tex]

5 multiplied by any number can never give 12 . Multiples of 5 are
[tex]5 \: 10 \: 15 \: 20[/tex]
7 multiples are
[tex]7 \: 14 \: 21[/tex]
Same applies for all the listed numbers

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