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OR
* sum of first n terms of an AP is 3n²-2n. Find the common differences of AP
​

By Emma

OR
* sum of first n terms of an AP is 3n²-2n. Find the common differences of AP
​

About the author
Emma

in school, 4/9 of the students are boys and the number of girls is 775. Find the number of boys in the school.​

According to the Association of Community Colleges, students enrolled during the 2013 – 2014 academic year had the following chara

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