If nP5 = 60 .n - 1P3 , then n is.
6
15
10
12
In how many different ways can the letters of the word 'MATHEMATICS' be arranged so that the vowels always come together?
10080
4989600
120960
None of these
P (10 , r ) = 2 P (9 , r ) , r is equal to
2
4
5
In how many different ways can the letters of the word 'LEADING' be arranged in such a way that the vowels always come together?
360
480
720
5040
In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
63
90
126
45
In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?
32
48
36
60
Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed?
210
1050
25200
21400
In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?
266
11760
86400
In how many ways can the letters of the word 'LEADER' be arranged?
72
144
Ashok, Usha,Rani,Sonu are to give speeches in a class.The teacher can arrange the order of their presentation in.
4 ways
12 ways
256 ways
24 ways
