The number of lines drawn through 6 points lying on a circle is ______
12
15
24
30
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 selections of 2 candidate for a post out of 5 equally qualified candidates.
P ( 5, 2 )
5 !
( 5 - 2 ) !
10
The number of ways in which 9 studnets can be equally distributed among 3 sections is ________.
9!
None of these
The value of n, when np2 = 20 is ________.
3
4
6
5
Six identical coins are arranged in a row. The number of ways in which the number of tails is equal to number of heads is _______.
20
120
9
40
If nc2 = nc3 , then the value of nc4 is ________.
2
The number of handshakes that can be exchanged among a party of 12 students if every student strikes hands once with every other student is _________.
P ( 12, 2 )
P ( 12, 10 )
C ( 12, 2 )
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 _______.
C ( 6, 4 )
C ( 6, 2 )
The number of different four digit numbers that canbe formed with the digits 2, 3, 4, 5, 7 using each digit only once is _______.
4 !
4 ( 4 ! )
5 ( 7 ! )
