Ask Experts Questions for FREE Help !
Ask
    bethany7's Avatar
    bethany7 Posts: 7, Reputation: 1
    New Member
     
    #1

    Oct 4, 2012, 06:31 AM
    Probability
    20 tins of soup. 7 are tomato, 9 are potato, 4 are carot. 2 tins are chosen at rendom. What is the probability that they are both carrot?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #2

    Oct 4, 2012, 08:44 AM
    What is your attempt?
    bethany7's Avatar
    bethany7 Posts: 7, Reputation: 1
    New Member
     
    #3

    Oct 4, 2012, 10:39 AM
    7/20 x 9/20 x 4/20 = 252/ 80000
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #4

    Oct 5, 2012, 09:09 AM
    The probability of getting the first as a carrot is given by:

    Number of carrot soup cans / Total number of cans

    The probability of getting the second as a carrot is given by:

    Number of carrot soup cans left / Total number of cans left


    The net probability is the product of those two probabilities.

    Can you try again?



    By the way, the probability that you have got above is the probability that you first pick a tomato soup can, then you pick a potato soup can after replacing the tomato can, and third get a carrot soup can after replacing the potato can.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Probability [ 1 Answers ]

A race track tote board has the odds for a horse listed as 5 to 3. tote boards list the odds that a horse will lose the race. If this is the case, what is the probability of the horse winning the race?

Probability [ 1 Answers ]

In a certain lottery, 3 numbers between 1 and 9 inclusive are drawn. These are the winning numbers. How many different selections are possible? Assume that the order in which the numbers are drawn is not important.

Probability [ 1 Answers ]

Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of the digits from the set of 0 through 9 and 26 slips each contain one of the 26 letters of the alphabet. If one slip is drawn at random, what is P(odd number and a vowel)?

Probability [ 1 Answers ]

What is the probabilty of throwing a sum of 15 on three rolls of a fair die if the first roll is 4?

Geometric probability, conditional probability with area of square [ 2 Answers ]

Chose a point at random in a square with sides 0<x<1 and 0<y<1. Let X be the x coordinate and Y be the y coordinate of the point chosen. Find the conditional probability P(y<1/2 / y>x).


View more questions Search