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what is the number 21 a prime or composite

Sagot :

mariamikayla
[tex]21|3 \\ 7|7 \\ 1 \\ \\ 21=3*7 \\ \\ D_{21}= \{1;3;7;21\} \\ \\ it \ means \ that \ 21 \ is \ composite \ number[/tex]

Answer:

composite

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