Question

Permutation means

• A. Arrangement of objects in which the order does not matter
• B. Arrangement of objects in which order matters
• C. Selection of objects in which the order does not matter
• D. None of the above

Answer 1

The correct option is B Arrangement of objects in which order matters

A permutation is a collection or a combination of objects from a set where the order or the arrangement of the chosen objects does matter. In other words, a permutation is an arrangement of objects in a definite order.

Example: Let's say there's a lock which is opened after entering three digits in the correct order. High security passwords. We will crack it though.

So, the numbers we have to choose from are $0,1,2,3,4,5,6,7,8,9$.

The first place can have all the $10$ numbers. Since, the numbers can be repeated, so, the other two places will also have the same possibility.

The permutation will be $10\times 10\times 10=1000$