Sequences & Series (id: cca60c814)

本题目来源于试卷: Sequences & Series，类别为 IB数学

[填空题]
An arithmetic sequence is/7.ovevije ,4bc /z oz g3(ry: xob/eohl0 t7 aeiven by 3,5,7, $\ldots $
1. Write down the value of the common difference, d .   
2. Find
1. $u_{10}$ ;   
2. $S_{10}$=   
3. Given that $u_{n}=253$ , find the value of n .   

参考答案:
空格1: 2±2%  空格2: 21±2%  空格3: 120±2%  空格4: 126±2% 


本题详细解析:

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