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ESA Practice Questions - Concurso De Admissão Aos Cursos De Formação E Graduação De Sargentos (CFGS - ESA) Exam

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In an arithmetic progression (PA), the 3rd term is a3 = 11 and the 7th term is a7 = 27. What is the 20th term (a20) of this progression?
Correct Answer:
79

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