英语翻译Start at 9 and count by 7s until 65.How many numbers are in the sequence?

英语翻译Start at 9 and count by 7s until 65.How many numbers are in the sequence?
英语翻译
Start at 9 and count by 7s until 65.How many numbers are in the sequence?

英语翻译Start at 9 and count by 7s until 65.How many numbers are in the sequence?
从9开始按7的倍数计数,一直计到65.(从9 到65)这列数中有多少数(7的倍数?
最终意思是指从9到65期间有多少数是7的倍数.

就是从9开始数，每次加7个数 知道数到65为止。如果这样数的话，一共有几个数？
不懂追问

这是一个数列题。意思是首相是9，公差是7（每次增加7），直到65.
问在这个数列里面有多少个数？
希望采纳啊！