A) 15
B) 30
C) 45
D) 75
Correct Answer: C
Solution :
[c] \[n(A\times B\times C\times ...)=n(A)\times n(B)\times n(C)\times ....\] \[\therefore n(A\times A\times B)=n(A)\times n(A)\times n(B)=3\times 3\times 5=45\] \[[\because \,\,\,n(A)=3,\,\,n(B)=5]\]You need to login to perform this action.
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