### Concept (1)

Permutations and combinations occur when we are trying to find the probability of a certain event happening. When working with statistics combinations, we are trying to find the number of possible combinations within a set. Therefore, when working with statistics combinations, the order of events does not matter.

### Sample Problems (4)

Need help with "Combinations" problems? Watch expert teachers solve similar problems to develop your skills.

How many ways to choose 3 students from a class of 20.

###### Problem 1
How to calculate the number of ways to choose a specific number of students from a larger group.

A catering menu gives you the choice of 3 out of 7 apps, 4 out of 12 main courses, and 3 out of 5 desserts.

How many different orders?
###### Problem 2
How to calculate the number of different menu combinations.

In a recent school election 40 students voted for candidate A and 60 voted for candidate B.

If 8 students are chosen at random find the probability 5 voted for candidate B?
###### Problem 3
How to calculate the probability of students electing a candidate for class president.

Find the probability of being dealt a heart flush in poker.

###### Problem 4
How to calculate the probability of being dealt a flush in poker.