老 狗說14 years ago如果擲杯筊的時候, 地面上有許多條跟杯筊一樣寬間距的平行線,請問杯筊跟線相交的機率有多大? (如果很多次的時候) 答: 2 / Pi 6 responses Show only author's response(s) Load all responses Load more older responses Load more responses New Response Register your Plurk account to respond to these plurks
