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1.4.8 Arithmetic sequences and series (A-level only)

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Question 11

The first three terms of an arithmetic series are (p+5)(p+5)(p+5), (3p−1)(3p-1)(3p−1) and (4p+3)(4p+3)(4p+3) respectively.

a.

Find the value of the constant ppp.

[2]
b.

Find the sum of the first 12 terms of the series.

[3]

1.4.8 Arithmetic sequences and series (A-level only) Questions

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