The number of lines drawn through 6 points lying on a circle is ______
12
15
24
30
In how many ways 6 gentlemen and 3 ladies can be seated round a table So that every gentleman may have a lady by his side.
720
1440
1880
1040
In how many ways can 7 toys be given away to 3 children when each child is eligible for all the toys ?
3570
4350
2187
2426
The number of ways in which 21 objects can be grouped into three groups 8,7 and 6 objects is _____
P, Q, R, S are to give lectures to an audience. The organizer can arrange the order of their presentation in ______.
4 ways
12 ways
256 ways
24 ways
The number of distinct positive divisors of 22 32 53 is _______.
25
36
72
144
The number of ways in which 5 women, can draw water from 5 taps, no tap remaining unused is _______.
5 x 5
52
5 !
None of these
The number of diagonals that can be drawn by joining the angular points of a polygon of 20 sides are
190
210
20
170
If npr = 720 ncr, then r is equal to _________.
6
5
4
7
In how ways can 18 different books be divided equally among 3 students?
18!
18!/(6!)2
18!/(6!)3
18!/6!
