how many passwords can be made if
1. there should be atleast 3 capital letters
2. atleast 3 small letters
3. atleast 2 numbers 0-9
4 the password should has length=10
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is it
26C3 * 26C3 * 10C2 * 62C2 * 10!
On Wed, Feb 9, 2011 at 7:16 PM, snehal jain learner@gmail.com wrote:
how many passwords can be made if
1. there should be atleast 3 capital letters
2. atleast 3 small letters
3. atleast 2 numbers 0-9
4 the password should has length=10
--
You
Are all the selected letters or numbers always different?
If they can also be same then answer would be different.
On Wed, Feb 9, 2011 at 7:20 PM, sunny agrawal sunny816.i...@gmail.comwrote:
is it
26C3 * 26C3 * 10C2 * 62C2 * 10!
On Wed, Feb 9, 2011 at 7:16 PM, snehal jain
letters and no. can be same... so the ans shd be different
On Wed, Feb 9, 2011 at 8:14 PM, Tushar Bindal tushicom...@gmail.com wrote:
Are all the selected letters or numbers always different?
If they can also be same then answer would be different.
On Wed, Feb 9, 2011 at 7:20 PM, sunny
yes they can be same, forgot to consider that
so it should be
(26^3)*(26^3)*(10^2)*(62^2)*(10!)
??
On Wed, Feb 9, 2011 at 10:20 PM, snehal jain learner@gmail.com wrote:
letters and no. can be same... so the ans shd be different
On Wed, Feb 9, 2011 at 8:14 PM, Tushar Bindal
@sunny
i think even this wont work
multiplying by 10! is wrong as when we have selecting same letters or
numbers then permutions will be fewer than 10!..
correct me if i am wrong..
On Wed, Feb 9, 2011 at 10:33 PM, sunny agrawal sunny816.i...@gmail.comwrote:
yes they can be same, forgot to
right, it will also not work
On Wed, Feb 9, 2011 at 10:42 PM, snehal jain learner@gmail.com wrote:
@sunny
i think even this wont work
multiplying by 10! is wrong as when we have selecting same letters or
numbers then permutions will be fewer than 10!..
correct me if i am wrong..
On
@ Dave : I think this shud also give the same result
C(26, 3) * C(26, 3) * C(10, 2) * C(62, 2)
On Wed, Feb 9, 2011 at 7:16 PM, snehal jain learner@gmail.com wrote:
how many passwords can be made if
1. there should be atleast 3 capital letters
2. atleast 3 small letters
3. atleast 2
Also it shud now be multiplied with Factorial of 10
On Thu, Feb 10, 2011 at 1:14 AM, Manmeet Singh mans.aus...@gmail.comwrote:
@ Dave : I think this shud also give the same result
C(26, 3) * C(26, 3) * C(10, 2) * C(62, 2)
On Wed, Feb 9, 2011 at 7:16 PM, snehal jain learner@gmail.com
