A bag contains 2 red balls,1 blue ball and 1 green ball.2 balls are drawn from the bag at the same at random.Find the probability of drawing
Q1. At least 1 red ball
Please show a clear step:)
probability F3
2010-11-09 6:32 am
回答 (1)
2010-11-09 6:35 am
✔ 最佳答案
P(At least 1 red ball)= 1 - P(No red ball)= 1 - P(1 blue ball and 1 green ball)= 1 - (2/4)(1/3)= 5/6
收錄日期: 2021-04-21 22:16:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101108000051KK01643