Combination

Combination and permutation

COUNTING METHOD

A card is drawn from a standard deck of plaing cards and is not replaced, then a second card is drawn. Find the probability the first is a jack of spades and the second card is black When a dice is rolled, what is the probability of getting a number greaterthan 2 or even number?

Is an arrangement of objects in wich order IS IMPORTANT One permutation for shuffling the songs on 7-track playlist would be ...

permutation

4! = 3! = 6! =

Factorial

Suppose you will listen to only four of seven shuffled track

permutation

For a project, Rami selects 12 family photographs that will randomly play in a slideshow . The slideshow will not show repeat photos until all 12 photos have been shown. Three photos are of Rami´s entire family, two photos are of his brother, three photos are jus of him, and four photos are of his sister. What is the probability that the first four pictures in the slideshow will be of Rami`s sister?

permutation

with repetition

One game show has contestants arrange five number tiles to build their guess at the price of a prize. Mishka is given five tiles with the numbers 2, 2, 5, 5 and 8. If Mishka arrages the tiles randomly, what is the probability that she arranges them as the correct price of $25.852?

permutation

Is a selection of objects in which order is not important Kail has choice of 20 flavors for her triple scoop cone, If she chooses the flavors random. What is the probability ... A man will go on a trip for 3 days so he will take with him 3 shirts, if he has 7 shirts, what is the probability ....

combination

1. In a bucket there are 10 balls, every ball is numbered from 1 to 10, if somebody pull out 3 of this randomly, how many combination of balls could be there. 2. A sportsman goes to the store to buy 9 pairs of shoes, if at the store there are a lot of shoes in 15 available colors, how many combination of colors can this man buy. 3. a place where 20 people work, if they have to form a president, vicepresident and secretary. How many possiblitiy does ? 4. How many different 5-people teams can be created from a classroom of 9 students? 5. There are eight different ice-cream flavors in the ice-cream shop. In how many ways can we choose five flavors out of these eight flavors? 6. In how many ways 7 children can be arranged in a line