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As per your syllabus, the GP 1, 2, 4, 8, 16,... can be written explicitly as which formula?

Atₙ = 2ⁿ
Btₙ = 2ⁿ⁻¹
Ctₙ = n²
Dtₙ = 2n
Answer & Solution
Correct answer: B. tₙ = 2ⁿ⁻¹
As per your syllabus, a = 1, r = 2. tₙ = 1 × 2ⁿ⁻¹ = 2ⁿ⁻¹.
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