6,7
7,8
8,9
9,10
If 12Pr=11P6+6. 11P5, then the value of r is
3
6
9
12
How many ways are there to arrange the letters in the word 'GARDEN' with vowels in alphabetical order?
360
240
120
480
There are 5 roads leading to a town from a village. The number of ways, in which a villager can go to the town and return back, is
25
20
10
5
Seven athletes are participating in a race. In how many ways the first three prizes can be won?
220
210
200
180
If 2nP3= 2. nP4, then the values of n is
4,5
6,10
1,8
2,4
The no. of diagonals of a polygon of n sides is
n (n-1)/2
n (n-2)/2
n(n-3)/2
n (n-5)/2
If a polygon has 10 sides, then the no. of diagonals of the polygon is
35
30
It is required to seat 5 men and 4 women in a row, so that women occupy the even places. How many such arrangements are possible?
2880
If nCr, denotes the no. of combinations of n things taken r at a time, then the value of expression
nC(r+1) +rC(r-1)+ 2nCr is
(n+2)Cr
(n+2) C(r+1)
(n+1) Cr
(n+1) C(r+1)
