How many kinds of instruments are there in the ad?翻译

How many kinds of instruments are there in the ad?翻译
How many kinds of instruments are there in the ad?翻译

How many kinds of instruments are there in the ad?翻译
instruments
n.仪器；手段,工具；乐器；法律文件
How many kinds of instruments are there in the ad?
这个广告中有多少种乐器/仪器?

广告中有多少种乐器？