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Q.

If  tr(A)= 3, tr(B)= 5 then tr(AB) =

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a

8

b

3/5

c

cannot say

d

15

answer is D.

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Detailed Solution

tr(A)=3,  tr(B)=5     ∴ tr(AB)≠tr (A).tr(B)

         cannot be determined

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