Intro To Arithmetic Sequences

Front

等差数列是一组有序的数字，每两个相邻项之间有相同的___________。

Back

added

Front

找出公差：29, 21, 13, 5, ...

Back

The common difference is -8

Front

找出公差：-34, -29, -24, -19, ...

Back

The common difference is 5

Front

数列 2, -1, -4, -7,... 的公差是多少？

Back

-3

Front

找出等差数列的下三个项：-33, -24, -15, -6, ...

Back

3, 12, 21

Front

等差数列的前三项如下：
13, 19, 25
这个数列的下两项是什么？

Back

31 and 37

Front

下列哪一个数列不是等差数列？12, 18, 24, 30,..., 10, 3, -4, -11,..., 2, 4, 8, 16,..., 16, 20, 24, 28,...

Back

2, 4, 8, 16,...

Front

以下哪一个数列不是等差数列？-7, -13, -19, -25,..., -10, -6, -2, 2,.., 6, 8, 10, 12,..., 3, 15, 75, 375,...

Back

3, 15, 75, 375,...

Front

21，_______，47 中缺少的数字是什么？

Back

Thirty-four

Front

You are sitting in row 23 and notice there are 65 seats in your row. The row in front of you has 63 seats and the row behind you has 67 seats. What is the common difference?

Back

2