One-tenth of 1% of a certain type of RAM chip are defective. A student
needs 40 chips for a certain board. How many should she buy in order for
there to be a 99% chance or greater of having at least 40 working chips??
這題如何算呢
感覺很簡單 但是又解不出來
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 163.18.31.191