Geometric series example with formula and sequence shown on a chalkboard background.
A chalkboard-style illustration of a geometric series with the formula Sₙ = a₁(1 - rⁿ) / (1 - r), showing the sequence 2 + 4 + 8 + 16 + 32 + 64 and labeled terms a₁ to a₅.
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ID: #1054129