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How many {3}{3} matrices {M} with entries from {{0},{1},{2}} a

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How many $3 \times 3$ 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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Mila Discussed

How many

3 \times 3

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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Question Text	How many $3 \times 3$ 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
Answer Type	Video solution: 1
Upvotes	150