A) 42
B) 49
C) 50
D) 51
E) 55
Correct Answer: C
Solution :
\[n(A)=p,n(B)=q\]and \[n(A\times B)=7\] \[\Rightarrow \] \[pq=7\] \[\therefore \]Only possible values are\[p=7,q=1\] or \[p=1,q=7\] \[\therefore \] \[{{P}^{2}}+{{q}^{2}}=49+1=50\]in either caseYou need to login to perform this action.
You will be redirected in
3 sec