Sail E0 Webinar
Question


Find the no. of non negative integral solutions of: x1+x2+x3=15.


Options:
A .   15
B .   15C3
C .   17!2!15!
D .   15C2
E .   8
Answer: Option C
:
C

Non negative integral solutions means x1,x2,x30


This is also a "similar to different” type of question.


Applying 0's and 1's method:


Total no. of ways =17!2!15!. Hence option (c) is the correct answer.



Was this answer helpful ?
Next Question

Submit Solution

Your email address will not be published. Required fields are marked *

More Questions on This Topic :


Latest Videos

Latest Test Papers