IB MAI HL Number and Algebra Topic 1.2 Sequences & Series (id: 63a8ae3a3)

本题目来源于试卷: IB MAI HL Number and Algebra Topic 1.2 Sequences & Series，类别为 IB数学

[填空题]
The fifth term, $u_5$ , of geometric sequence is 375. The sixth term, $u_6$，of the sequence is 75.
1.Write down the common ratio of the sequence.
r=  .
2.Find $u_1$.
$u_1$=  .
The sum of the first k terms in the sequence is 292968.

3.Find the value of k.
k=  .

参考答案:
空格1: 0.2  空格2: 234275  空格3: 8 


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