MCQ PracticeWhat is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?Subject: MathematicsTopic: ProgressionsA219B279C231D137Correct Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the