We do not do your homework for you. However, I will start you out. Read the questions carefully.
There are 13 diamonds in a deck of 52 cards. For the odds against a diamond:
(52-13)/52 = ?
I hope this helps.
- In a normal pack of cards, write down the odds against picking each card.
a) a diamond
b) a jack
c) a red 10
d) a black picture card
e) a picture card
1. A die is rolled 3 times. Estimate the chance of 2 or 3 no.'s being the same. Find the probability that
i) the three nos are the same.
ii) the second roll is different from the first one.
iii) the three nos are all diferent
iv) two or three nos are the same
4. A huge container of lollies is all the same shape but has 10 different colours. There are exactly the same no. of lollies of each colour and thousands of each type. If 1 lolly is picked, the probability that it a particular colour is 1/10 and because there are thousands of lollies, the probability that the second is the same colour is also 1/10.
If 4 lollies are picked out, find the probability that
a) all four are diferent colours
b) any two of them are the same colour
- If 3 people are asked what day of the week they were born, find the probability that
a) 2 or 3 are the same.
b) only 2 people are the same.
- If 4 people are asked what day of the week they were born, find the probability that 2 or more people are born on the same day.
Using this idea, how many people need to be asked for their birthdate in order that at least two people sharing their birthdate will have a chance of 1/2.
The probability that my bus will arrive on time at school on any given morning is 9/10 . If I go to school 5 days a week, and there are 8 weeks in this term, how many times can I expect my bus to be late?
1 answer
2 answers