How many permutations exist of the letters a, b, c, d taken three at a time?

24

12

4

Question

Mathematics

Mike Reese

1 September, 21:50

How many permutations exist of the letters a, b, c, d taken three at a time?

24

12

4

+3

Answers (1)

Know the Answer?

Edsel · Answer 1

The correct answer is 24

You have to apply factorials here and formulas. You have 4 letters which means that your n=4, and you have 3 objects at a time which, means that you have 4 different groups of combinations with 6 permutations in each due to the 3! factorial. 6 x 4 is 24.

How many permutations exist of the letters a, b, c, d taken three at a time?24124

How many permutations exist of the letters a, b, c, d taken three at a time?

24

12

4