shawdowninja136 shawdowninja136

31-10-2018
Mathematics

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I need help with both questions 14 and 15

I need help with both questions 14 and 15 class=

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alaizzasolis alaizzasolis

31-10-2018

for number 14: 20 is not a perfect number and 21 is a perfect number
for number 15: 7 and 9
& 11 and 13

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