Geometric, found by multiplying or dividing, Arithmetic, found by adding or subtracting, a1, first term in the sequence, an, the nth term in the sequence, d, common difference between terms, n, the term number we are looking for

Sequencing

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活動設定 排行榜 作業

活動設定

排行榜

切換範本

恢復自動保存: ?