There are 8 people on the debate team. in how many ways can the coach choose 4 members to send to competition?

70

Step-by-step explanation:

Given : There are 8 people on the debate team.

To Find: In how many ways can the coach choose 4 members to send to competition?

Solution:

We will use combination over here

Formula :

Now There are 8 people on the debate team and the coach have to choose 4

So, n = 8

r = 4

So, number of ways of choosing 4 people out of 8 =

                                                                                    =  

                                                                                    =  

                                                                                    =  

Hence there are 70 ways of choosing 4 members out of 8 to send to competition

expression #3 is not equivalent. the others are.

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.