# 13 students vie for the right t fill up my car weekly during a month. there are 4 weeks in the chosen month. how many different groups are there if ;1) order is not important2) order is important3) there can be repeats

Question

13 students vie for the right t fill up my car weekly during a month. there are 4 weeks in the chosen month. how many different groups are there if ;

1) order is not important

2) order is important

3) there can be repeats

Step 1

Combinations:

It defines the number of possible ways an object can be selected from a group. In combinations, the order of selection does not matter.

Permutations:

It defines the number of possible ways an object can be arranged or ordered. In permutations, order does matters.

Step 2

1) Number of different groups when order is not important:

Here, the value of n is 13 and the value of x is 4. Since order is not important, the combination is appropriate.

The number of different groups when order is not important is obtained as 715, from the calculations given below.

Step 3

2) Number of different groups when order is important:

The number of different groups when order is important i...

### Want to see the full answer?

See Solution

#### Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in