一定要有解釋啊唔該{其實我有晒d steps答案但係我睇唔明~~}
1. John throws a die twice, find the probability that the numbers on the die
are the same. ((我寫6/36x6/36<<因為兩次嘛 但係又唔岩!!?? why?))
2. A fair die is tossed 2 times. What is the probability that the results are in
the order "2" and "4"?
3. In a lucky draw, there are 6 different colours of balls in the bag, the one
who can get the "black" ball can get the first prize. If Mr Chan is the third
to pick the ball in the bag, find the probability that he can get the first prize.
((佢又唔講有冇replacement..咁到底係當佢有定冇???))
4. There are 3 red balls and 3 white balls in box A and 2 red balls and 4 white
balls in box B. Draw a ball from box A and put it into box B. Find the
probability the ball from box B is "red".
((我想問佢講第二句黎做咩呢??))
5. Two students A and B play 2 games of table tennis. A's chance of winning
a game is 3/5. Find the probability that each of them wins one game?
((佢又唔講B贏/敗的probability點計啊?? 同埋2/5係咪A會輸的
probability???))
6. For a biased die, the experimental probabilities of the numbers are found to
be: P(1)=1/3, P(2)=2/9 and P(3)=P(4)=P(5)=P(6). The die is thrown twice.
Find the probability of getting two "6"s.
((咁P(3)的probability係咪1/9? then我完全唔識計...))
7. There are 5 members A, B, C, D, E in the round table to attend the monthly
meeting. The order of the seats is randomly arranged. Find the probability
that A sits next to B.
((完全唔識點做~~~~))
**thanks 要有解釋<<<一定一定!!!
**就算你地淨係識一題兩題都要答呀唔該!!!!!!因為好urgent!!!!!!!!!!!
更新1:
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