How many 3xx3 matrices M with entries fr...

How many `3xx3` matrices M with entries from `{0, 1, 2}` are there, for which the sum of the diagonal entries of `M^(T)M` is 5 ?

A

126

B

198

C

162

D

135

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The correct Answer is:

B

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VMC MODULES ENGLISH-MATRICES AND DETERMINANTS -JEE ADVANCED ARCHIVE

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