Free Microsoft GH-200 Actual Exam Questions - Question 4 Discussion
Could it be 4 jobs if one row’s a linear combo of others, not fully independent?
Looks like counting the number of linearly independent rows is key here. Since some rows seem to be multiples or combinations of others, the total jobs correspond to the matrix rank, which matches option C with 5 jobs. This fits better than just counting non-zero entries or rows, so C makes the most sense.
B/C? The difference between 4 and 5 jobs probably comes down to whether two similar rows count as independent or not. Counting unique linearly independent rows might help decide.
C, since 5 non-zero pivots appear after elimination, indicating 5 jobs.
A. The matrix seems to have only 3 clearly independent rows after checking dependencies, so 3 jobs make sense. More than that would imply extra independent vectors which aren’t visible here.
B tbh, the matrix clearly has 4 distinct non-zero rows or columns indicating unique jobs. If it were full rank, D would be right, but the dependencies reduce that number. Since you can’t have more jobs than the rank, and it’s not as low as 3, 4 jobs seems to fit best here. The question probably expects counting independent tasks rather than just total rows or any non-zero entry.
B imo, the matrix seems to show 4 distinct connections, not just 3 or full 6.
A/C? The rank definitely points to 3 jobs, but the question might be counting unique entries or connections too. If those 5 non-zero elements represent distinct jobs without overlap, then C could make sense. Still, rank feels like the safer bet in terms of linear independence defining job count.
D imo, because the matrix size is 6x6 and if it’s full rank, it means 6 independent jobs. The rank method is good, but check the matrix shape too.
Maybe C here. If the matrix has 5 non-zero entries that correspond to independent jobs, it could be 5 jobs total, not just the rank count.
The matrix has three linearly independent rows, so the number of jobs should be 3. I’d go with A.
It’s A since the rank of the matrix equals 3, so 3 jobs.
A/C? I figured since there are 5 non-zero elements in the matrix, it should be 5 jobs. B sounds off because it doesn’t match the count of tasks.
Option B