veronica26 veronica26

18-02-2018
Mathematics

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Abigail says that all the numbers ending 1 are prime. Is Abigail correct or incorrect

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hafizatobe2015 hafizatobe2015

18-02-2018

Incorrect.
Go through the numbers and you'll find un-prime numbers ending in 1:
21, 81, 121,...

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maniyahmizzle20 maniyahmizzle20

18-02-2018

incorrect.......................

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