OCR MEI Paper 3 2020 November — Question 1

Exam BoardOCR MEI
ModulePaper 3 (Paper 3)
Year2020
SessionNovember
TopicArithmetic Sequences and Series
1 Find the value of \(\sum _ { r = 1 } ^ { 5 } 2 ^ { r } ( r - 1 )\).
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