?

Algebra

Free Version

Upgrade subject to access all content

Difficult

Permutations and Combinations: 4-letter Words

ALGEBR-BY5XHE

4 - letter words are formed from 8 different letters of the alphabet. Find the number of words with at least one letter repeated.

A

$1208$

B

$2416$

C

$4832$

D

$9664$