Okay, I'm having trouble understanding the difference between "and" and "or" in problems.
For example:
-When drawing a single card, find the probability of getting a 4 OR a diamond.
-When drawing a single card, find the probability of getting a jack AND a black card.

What is the difference? What are the answers to these so I can check my study guide? Please help, I have a test soon!

  1. 👍 0
  2. 👎 0
  3. 👁 179
  1. When the problem states OR -- then you need to figure two different probabilities.

    You have a 1 in 13 chance of drawing a 4. You have a 1 in 4 chance of drawing a diamond.

  2. For either-or probabilities, you add the individual probabilities. 4/52 + 13/52 - 1/52 = ?

    Subtract the 1/52, because one of the fours is a diamond.

    There are two black jacks in the deck. 2/52 = 1/26

    To determine probabilities of all events occurring, multiply the individual probabilities.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Psychology

    I am having trouble understanding the following question: What prevents an individual from allocating attention the way in which they intend? Can someone give me a better understanding of the question?

    asked by Lynn on January 19, 2010
  2. Chemistry I - University

    Suppose 5.87 g of barium acetate is dissolved in 300. mL of a 71.0 m M aqueous solution of sodium chromate. calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change

    asked by Jessica on September 27, 2015
  3. psychology

    Summarize the multi-factorial model and how it relates to the diagnosis of illnesses. • Select two health problems discussed in the text. • Explain what role psychology has played in understanding and managing these two health

    asked by lo on July 10, 2010
  4. psychology

    I have trouble understanding whats the three psychological models of mental illness include etiological explanation and the principle therapeutic modality that evolved from the model. Can anyone help me? Thanks

    asked by Derek on May 17, 2011
  1. PreCalc

    There are a few problems on my homework im having trouble on. can you explain how to do these problems? thanks 1. x^2+10x+25-9y^2 2. x^2+2x-3 ------------- x^2+3x--2 3. 2xSQRT(x^2+5) - 2x^3/x^2+5

    asked by Art on October 28, 2018
  2. pre calc

    I have a few problems from my homework that I am having trouble with. #1 Find the difference quotient of f foreach function f(x)=1/(x+3) I got -2x+6 #2 Express the area of an isosceles right triangle as a function of the length x

    asked by Rebekah on August 30, 2012
  3. Chemistry

    I'm having trouble understanding hybrid atomic orbitals. Could you please explain? Thanks

    asked by Anonymous on October 4, 2015
  4. algebra

    Please help, I am really having trouble understanding this problem. what are the foci of the hyperbola given by the equation 16y^2-9x^2=144

    asked by Abbi on December 17, 2014
  1. Accounting Ethics: Keeping it Clean.

    What did Arthur Andersen contribute to the Enron disaster? I have read about this and I am having trouble understanding it.

    asked by A.W. on March 30, 2009
  2. English

    Oscar Wilde said, "I always pass on good advice. It is the only thing to do with it. It is never of any use to oneself." Write a paragraph discussing whether you agree with this statement and explain why or why not. You should

    asked by Brittney on February 10, 2020
  3. MATH

    im so stupid, uhh whats 1 plus 1 is it 11? I'm sorry--that was not me. I am trying to get some help understanding the problems. I am not stupid. 1 + 1 = 2 1 + 10 = 11 And I guess we could make a joke about 1 + 1 being 11 if we

    asked by Tony on December 17, 2006
  4. answer please!!!!! Math

    I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)

    asked by Angelica on April 18, 2010

You can view more similar questions or ask a new question.