permutations

Front

What is a permutation?

Back

A permutation is an arrangement of objects in a specific order.

Front

How many ways can a club select a president, vice president, and a secretary from a group of 5 people?

Back

60 ways.

Front

In how many ways can 3 different vases be arranged on a tray?

Back

6 ways.

Front

What is the formula for calculating permutations of n objects taken r at a time?

Back

The formula is n! / (n - r)!.

Front

What is the value of 5! (5 factorial)?

Back

5! = 120.

Front

What is the probability of an empty set?

Back

The probability of an empty set is 0.

Front

How many distinguishable permutations are there for the letters in the word 'HONOLULU'?

Back

5040 distinguishable permutations.

Front

What is the difference between permutations and combinations?

Back

Permutations consider the order of objects, while combinations do not.

Front

If a set has 4 elements, how many permutations can be made?

Back

24 permutations (4!).

Front

What is the significance of the factorial symbol '!' in permutations?

Back

The factorial symbol '!' represents the product of all positive integers up to that number.