Question

Find the number of permutations of the first 8 letters of the alphabet taking 4 letters at a time.

Answer 1

The permutations of the first letters of alphabet taking 4 letters at once will be given by:
8P4
using the calculator this will give us:
8P4=1,680
This tells us that there are more than 1,680 different ways that the leteers will be selected.