Aptitude - Permutation and Combination - Discussion
Discussion Forum : Permutation and Combination - General Questions (Q.No. 2)
2.
In how many different ways can the letters of the word 'LEADING' be arranged in such a way that the vowels always come together?
Answer: Option
Explanation:
The word 'LEADING' has 7 different letters.
When the vowels EAI are always together, they can be supposed to form one letter.
Then, we have to arrange the letters LNDG (EAI).
Now, 5 (4 + 1 = 5) letters can be arranged in 5! = 120 ways.
The vowels (EAI) can be arranged among themselves in 3! = 6 ways.
Required number of ways = (120 x 6) = 720.
Video Explanation: https://youtu.be/WCEF3iW3H2c
Discussion:
97 comments Page 10 of 10.
Sagar choudhary said:
1 decade ago
What is this 5! and 3! ?
Bhavik said:
1 decade ago
How to read these nPr ?
Tushar said:
7 years ago
@Shiva.
It means 5!.
It means 5!.
Pooja said:
7 years ago
5! means? Explain
Ncs said:
1 decade ago
Why not 5! + 3! ?
Moaned said:
1 decade ago
I am not getting
Subbu said:
1 decade ago
7!=5040
(1)
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