The number of lines drawn through 6 points lying on a circle is ______
12
15
24
30
In an examination, a student has to answer 4 questons out of 6 questions 1 and 2 are however, compulsary.
The number of ways in which the students can make the choice is _______.
4
C ( 6, 4 )
C ( 6, 2 )
6
The number of ways in which 21 objects can be grouped into three groups 8,7 and 6 objects is _____
In how ways can 18 different books be divided equally among 3 students?
18!
18!/(6!)2
18!/(6!)3
18!/6!
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
There are four letter boxes in a post office. In how many ways can a man post 8 distinct letters.
8 x 8
84
4 8
8 p 4
The number of diagonals that can be drawn by joining the angular points of a heptagon are
7
14
21
28
In how many ways can 7 persons sit around a table.So that all shallnot have the same neighbours in any two
arrangements?
180
260
360
720
If nc2 = nc3 , then the value of nc4 is ________.
2
3
5
The number of distinct positive divisors of 22 32 53 is _______.
25
36
72
144
