Red One
Saturday, September 4th, 2010
What is the probability that at least one of the other two red?
Situation 1: You have four balls. You know that one of them is red. The other three are green. Two of the four are drawn at random. What is the probability that at least one of the remaining balls red? Scenario 2: You has four balls. You know two of them are red. The other two are green. Two of the four are drawn at random. What is the probability that at least one of the remaining balls are red? Please show the math. I try to do an analysis on a variety of similar situations. I just need to understand what measures are the problem. Thanks!
q1 P] [> 1 red = = 1 - [3 balls of greens to choose 2] / [with four balls to choose 2] = 1 – 3C2 / 4C2 = 1-3 / 6 = 1 / 2 Q2 P [> = 1] = Red [2 to choose a red] * [Choose from 2 Green 1 / [four balls to choose 2] = 2C1 * 2C1 / 4C2 = 4 / 6 = 2 / 3 Note: Q1 also could hv been resolved which generally T2 P [> 1 = red] = [1 1 red select] * [select one green from3] / [4 ball choose 2] = 1 * 3 / 6 = 1 / 2
MIKA, RedOne – Kick Ass (We Are Young)
|
|
S Sexy Red Leopard One Sleeve Mini Dress Cocktail Party Evening Clubwear New $45.50 |
|
|
FRENETICS/NAKATOMI PLAZA countdown radio/hurray for one good eye 7″ 2 trk red vi $11.70 |
|
|
husband Funny One word T Shirt All colours & Sizes $15.80 |
|
|
husband Funny One word T Shirt All colours & Sizes $15.80 |
|
|
husband Funny One word T Shirt All colours & Sizes $15.80 |
|
|
husband Funny One word T Shirt All colours & Sizes $15.80 |
|
|
husband Funny One word T Shirt All colours & Sizes $15.80 |
|
|
Women’s Cocktail Party Red Sexy Long One Shoulder Maxi Dress Sz XXL 3XL 16 18 20 $24.82 |
|
|
Nike Foamposite One Metallic Red size 10 $330.00 |
|
|
Bacati One Size Quilt in Blue and Red BIMWHBQLT $99.99 |