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DanielleElmas [232]
3 years ago
5

Please answer this question.

Mathematics
1 answer:
lesantik [10]3 years ago
4 0

Answer:

aₙ = aₙ₋₁ + n + 1

Step-by-step explanation:

a₁ = 2

a₂ = 2 + 2 + 1 = 5

a₃ = 5 + 3 + 1 = 9

a₄ = 9 + 4 + 1 = 14

a₅ = 14 + 5 + 1 = 20

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