The number of ways in which 10 different flowers can be strung to form a garland.So that 4 particular flowers are never separated.
8460
8640
8480
6840
If (n+1)! = 56 (n-1)!,then n=
8
7
9
6
Suppose the word 'PENCIL' is given to us and we have to form words with the letters of this word,in how many ways we arrange if all words begin with a particular letters.
360 ways
720 ways
24 ways
120 ways
If nc10 = nc14,then 25 Cn =
25
24
25!
24!
How many numbers can be formed with digits 1,2,3,4,3,2,1 .So that odd digits always occupy the odd places?
18
20
How many numbers of 3 digits can be formed with the digits 1,2,3,4,5 when digits may be repeated?
125
725
5
The number of ways in which n different beads can be arranged to form necklace are
(n+1)!
n!
(n-1)!/2
(n+1)!/2
The number of seven digit integers,with sum of the digits equal to 10 and formed by using the digits 1,2 and 3 only is
55
66
77
88
In how many ways can 7 persons sit around a table.So that all shall not have the same neighbours in any two arrangements?
180
260
360
720
