题目内容
In the arithmetic sequence $${t}_{1}$$, $${t}_{2}$$, $${t}_{3}$$, ..., $${t}_{n}$$,..., $${t}_{1}= 23$$ and $${t}_{n} = {t}_{n-1}- 3$$ for each $$n > 1$$. What is the value of n when $${t}_{n}=-4$$ ?
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正确答案: C
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题目基本信息
- 所属科目:数学PS
- 题目来源1:PREP07 Test 1-108
- 正确率: 0%
- 难度: 易