Question

A(n) _____________ is an ordered arrangement of $r$objects chosen from $n$objects.

Short answer

A permutation is an ordered arrangement of $r$objects chosen from $n$objects.

Step-by-step solution

Step 1. Given information.

The given statement is:

A(n) __________ is an ordered arrangement of $r$objects chosen from $n$objects.

Step 2. Determine the missing term for the blank.  

The notation of permutation $P(n,r)$represents the number of ordered arrangements of $r$objects chosen from $n$distinct objects, where $r\le n$and repetition is not allowed.

It means the required term for the blank is "permutation".

Step 3. Conclusion.

A permutation is an ordered arrangement of $r$objects chosen from $n$objects.