Trace of a matrix is defined only for a square matrix . It is the sum of the elements on the main diagonal, from the upper left to the lower right, of the matrix
Sort each unit into the box indicating what it measures.
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Answer:
Step-by-step explanation:
We have to select george but not nina with two other people
No. of ways selecting 2 two people knowing Geroge will be the third one is
(beacuse we have to exclude Nina)
And total no of ways of selecting 3 people out of 8 people is
Therefore the required Probability is
=