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How many terms of the AP 63, 60, 57, … add up to 693? | StemPy Lab

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How many terms of the AP 63, 60, 57, … add up to 693?

MathematicsHardHigh School (11–12)Algebra › Sequences and Series Board Exam A-Level IB AEEE (Amrita)AMUEEE AP EAPCET

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How many terms of the AP $63, 60, 57, \dots$ add up to $693$ ?

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