囧次元动漫 https://www.9ciyuan.com/
A soldier shooting at a target hits it 12 1/2% of the time.How many times must he shoot to be certain he will register 100 hits? Why?
囧次元动漫 https://www.9ciyuan.com/
A soldier shooting at a target hits it 12 1/2% of the time.How many times must he shoot to be certain he will register 100 hits? Why?