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13 January, 23:11

Calculate 3n-1 for n equals 2 to 10 explain how you know that the numbers are composite

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  1. 13 January, 23:23
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    composite number means a number that can be formed by multiplying two smaller numbers

    3n-1 for n=2, 3n-1=3*2-1=6-1=5

    3n-1 for n=10, 3n-1=3*10-1=30-1=29

    5 is composite because 2*2.5=5

    29 is composite because 5*5.8=29
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