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 ways in which 9 studnets can be equally distributed among 3 sections is ________.
9!
The possible out comes when a coin is tossed five times.
25
10
5/2
The number of distinct positive divisors of 22 32 53 is _______.
36
72
144
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 ! )
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 )
The number of ways in which 5 boys and 5 girls can sit in a row so that all the girls sit together is ______.
86400
14400
7200
12600
Twelve students compete for a race. The number of ways in which first three places can be taken as ______.
3!
12 . 11.10
12!/3!
12! ___ 3
How many 10 digits number can be written by using the digits 1 and 2.
10 C1 +9 C2
2 10
10C1
10 !
How many different arrangements can be made out of the letters in the expansion A2 B3 C4, when written in full ?
2! + 3! + 4!
2 ! 3!
