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JEE Main 18 March 2021 Shift 1 Solved Paper

Section: Mathematics
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Question : 78 of 90
 
Marks: +1, -0
Let A+2B=[
120
6−33
−531
] and 2A−B=[
2−15
2−16
012
]. If Tr(A) denotes the sum of all diagonal elements of the matrix A, then Tr(A)−Tr(B) has value equal to
[18 Mar 2021 Shift 1]
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