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Algebra & Modern Mathematics question bank (Numerical Ability & Quantitative Aptitude)

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Q1.
[Quantitative Aptitude - Technical Interview #2] A pipe can fill a reservoir in 12 hours, while a leak at the bottom can empty it in 20 hours. If both operate simultaneously, in how many hours will the reservoir be completely filled?

(A)
32 hours
(B)
16 hours
(C)
30 hours
(D)
24 hours
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Q2.
[Operating Systems & Systems - Technical Interview #4] Which condition is NOT necessary for a system deadlock to occur according to Coffman's conditions?

(A)
Circular wait
(B)
Preemption of allocated resources by high-priority processes
(C)
Hold and wait
(D)
Mutual exclusion
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