A roullete wheel has numbers 1 to 8. The wheel is turn 3 times , and each time the number where the ball landed is noted. What is the possible number of ways so that the sum of the 3 numbers is 16?
除硬列各项排法, 有没有其他思路能在两分钟内搞定?
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
