Permutation And Combination Ques 6
Question-
In how many different ways can the letters of the word HARYANA be arranged?
(1) 820
(2) 840
(3) 860
(4) 320
(5) 720
(IBPS Bank PO/MT (Pre.) Exam, 23.10.2016)
Show Answer
Correct Answer: (2)
Solution: (2)
The word HARYANA has 7 letters out of which A comes thrice.
$\therefore$ Number of arrangements $=\frac{7 !}{3 !}=7 \times 6 \times 5 \times 4 \times \frac{3 !}{3 !}$ $=7 \times 6 \times 5 \times 4=840$
BETA
