Question

How many words can you make in English from the following 4 letters: WXYZ? The repetition of the letters is not allowed.

21

22

23

24

Answer 1

24

Explanation:

WXYZ = 4 letters

P(n, r) = n!/(n -r)!

Number of object, n = 4

Sample, r = 4

P(n, r) = P(4, 4)

P(n, r) = n!/(n -r)!

= 4! / (4 - 4)!

= 4×3×2×1 / (0)!

= 24/1

= 24

You can form 24 words from rearranging WXYZ without repetition