WAEC - Further Mathematics (2018 - No. 20)
In how many ways can the letters of the word 'ELECTIVE' be arranged?
336
1680
6720
20160
คำอธิบาย
The word has 8 letters with one letter repeated 3 times, therefore we have:
\(\frac{8!}{3!} = 6720\) ways.
The word has 8 letters with one letter repeated 3 times, therefore we have:
\(\frac{8!}{3!} = 6720\) ways.