IB MAI HL Number and Algebra Topic 1.2 Sequences & Series (id: 2fcb7918c)

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]
A battalion is arrangeit g,uf* +hh98crrb3 ld, per row, according to an arit5puj58-yo3:cr 3 qwbjeklx6nhmetic sequence. There are 24 troops in the third row and 42 troops in the - 8ebykoc3r : 53ujjw5np l6xqsixth row.

1.Find the first term and the common difference of this arithmetic sequence.
$u_1$=  .
There are 15 rows in the battalion.

2.Find the total number of troops in the battalion.
$S_{15}$=  troops.

参考答案:
空格1: 12  空格2: 810 


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