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Lesson 1 Questions: Arithmetic and Geometric Sequences and Series — Lesson quiz

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1.
In the sequence 3, 7, 11, 15, …, the common difference d and the 20th term T₂₀ are:
d = 4 and T₂₀ = 83
d = 3 and T₂₀ = 60
d = 4 and T₂₀ = 79
d = 5 and T₂₀ = 98
2.
The common ratio of the geometric sequence 64, 32, 16, 8, … is:
2
−1/2
4
1/2
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