The first three terms of an arithmetic series are (k+3)(k+3)(k+3), (2k+4)(2k+4)(2k+4) and (4k−2)(4k-2)(4k−2) respectively.
Find the value of the constant kkk.
Find the sum of the first 20 terms of the series.
Practise Edexcel A Level Maths 3.4 Geometric Series with exam-style questions for A Level Maths. 27 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.