jennjenn93 jennjenn93

10-05-2016
Mathematics

contestada

Which of the following numbers is not divisible only by prime numbers, itself and 1?
Ext
A 21 B 77 C 110 D 221 E 65

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heyitsbeca heyitsbeca

10-05-2016

D, 221 because 21 can be divided by 3, 77 can be divided by 7 and/or 11, 110 can be divided by 11, 221---none---, 65 can be divided by 5.
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