1.

Number of non - negative integral solutions of a+b+c+d=n,n in N, is :

Answer»

<P>`""^(n+3)P_2`
`((n+1)(n+2)(n+3))/6`
`""^(n+1)P_(n-4)`
NONE of these

Answer :B


Discussion

No Comment Found

Related InterviewSolutions