Question

Combination and permutation without repetition and with repetition,
In how many ways can a team of 5 members be selected from a group of 9 people?

Answer 1

Answer:

Hiii

Step-by-step explanation:

Ways to select 5 persons from among 9 persons including 5 boys and 4 girls = 9!/4! = 15,120.

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Answer 2

Answer:

Combinations without repetition

Combinations without Repetition A combination without repetition of k objects from n is a way of selecting k objects from a list of n. The selection rules are:

• the order of selection does not matter (the same objects selected in different orders are regarded as the same combination);

• each object can be selected only once.

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A combination with repetition of k objects from n is a way of selecting k objects from a list of n. The selection rules are:

• the order of selection does not matter (the same objects selected in different orders are regarded as the same combination);

• each object can be selected more than once.

We can divide the people by using the ways in the attachment.

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