Question

As part of an activity during math class, Kiera has to select a secret number containing 3 different digits from 1 to 4. How many different secret numbers can Kiera create?

Answer 1

24.

Explanation:

The is the number of permutations of 3 digits from 4

= 4P3

= 4! / (4- 3)!

= 4 *3 *2 *1 / 1!

= 24/1

= 24.