Question

A sequence {Uₙ} is defined as:

  • I U₁ = a (a is a real constant) I
  • I For every n ≥ 2: Uₙ = Uₙ₋₁ + (4n − 3) It is known that U₃ + U₅ = 70. What is the value of U₆?
A 28
B 63
C 71
D 42
E None of these
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