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Byju's Answer
Standard VIII
Mathematics
Letters for Digits
5. how many 3...
Question
5. how many 3x3 matrices M with entries from {0,1,2}are there, for which the sum of the diagnol entries of M'M is 5??
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Q.
How many
3
×
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
?
Q.
How many
3
×
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
?
Q.
How many
3
×
3
matrices M with entires from {0, 1, 2} are there, for which the sum of the diagonal entries of
M
T
M
is 5 ?
Q.
How many
3
×
3
matrices M with entires from {0, 1, 2} are there, for which the sum of the diagonal entries of
M
T
M
is 5 ?
Q.
Let
M
be any
3
×
3
matrix with entries from the set
{
0
,
1
,
2
}
. The maximum number of such matrices, for which the sum of diagonal elements of
M
T
M
is seven, is
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