Question

A sequence {Sₙ} is defined for n ≥ 1 as follows:

  • I For every n ≥ 3: Sₙ = Sₙ₋₂ + 6 It is also known that - S₃ + S₄ = 40 and S₅ − S₂ = 10. What is the value of S₇?
A 39
B 53
C 31
D 46
E None of these
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