(A) 1360
(B) 2480
(C) 1440
(D) 4050
Correct Option is: C
The word ‘POTENCY’ has 7 different letters.
When the vowels EO are always together, they can be supposed to form one letter.
Then, we have to arrange the letters PTNCY (EO).
Now, 6 (5 + 1 = 6) letters can be arranged in 6! = 720 ways.
The vowels (EO) can be arranged among themselves in 2! = 2 ways.
Required number of ways = (720 x2)
= 1440.