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Consider the following solution to the producer-consumer synchronization problem. The shared buffer size is ?. Three semaphores empty, full and mutex are defined with respective initial values of 0, ? and 1. Semaphore empty denotes the number of available slots in the buffer, for the consumer to read from. Semaphore denotes the number of available slots in the buffer, for the producer to write to. The placeholder variables, denoted by P, Q, R, and S, in the code below can be assigned either empty or full. The valid semaphore operations are: wait ( ) and signal ( ). Producer: Consumer: do {         wait (P) ;         wait (mutex) ;         //Add item to buffer         signal (mutex) ;         signal (Q) ; } while (1) ; do {          wait (R) ;          wait (mutex) ;          //Consume item from buffer          signal (mutex) ;          signal (S) ; } while (1) ;   Which one of the following assignments to P, Q, R and S will yield the correct solution?
P, Q, R, Sand T are five crops that Babu grows. T is fast growing and more water demanding than R which gives more yield than T. P gives more yield than R and grows faster than Q. Q is more water demanding than T but is second lowest yielder, S is the slowest growing and least water demanding of all crops but gives highest yield. R is more water demanding and grows faster than P. Select the crop or crops that has/ have as many as crops that are more water demanding and as many as crops that give less yield than it. 
There are eight cars A, B, C, D, E, F, G and H. Each car has a different price. Price of C is more than that of A and D. Price of at least two cars is less than A. Price of F is more than that of G and H. Price of D is less than G, but more than E. Price of B is less than H, but more than G. Price of at least four cars is more than that of C. Which of the following sequence is correct?
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. P- And if I think about something which didn't happen I start thinking about all the other things which didn't happen. Q- But there is only ever one thing which happened at a particular time and a particular place. R- And there are an infinite number of things which didn't happen at that time and that place. S- A lie is when you say something happened which didn't happen.  
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form acoherent paragraph.
P- And if I think about something which didn't happen I start thinking about all the other things which didn't happen.
Q- But there is only ever one thing which happened at a particular time and a particular place.
R- And there are an infinite number of things which didn't happen at that time and that place.
S- A lie is when you say something happened which didn't happen.
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. People may see, and hear, and feel all their lives without ____________ learning the nature of things they see. But reason is the mind's eye, and enables us to see why things are, and when and how events may be made to happen ___________ not to happen. The logician endeavours to ____________ exactly what this reason is which makes the power of men. We all, as I have said, must reason well or ill, but logic is the science of reasoning and enables us to distinguish ______________ the good reasoning which leads to truth, and the bad reasoning which every day betrays people into error _________ misfortune. made to happen ___________ not to happen.
There are six persons Saurav, Harshita, Jay, Ashwini, Jagannath and Sakshi, who got different marks in the examination. Ashwini got more marks than all of them. Jay got more marks than two of them. Jagannath got less marks than only Ashwini. Saurav got less marks than 5 persons. Harshita got more marks than Jay while Sakshi got less marks than Jay. How many persons scored more marks than Sakshi?
Any recursive view must be defined as the union of two subqueries: a _______ query that is nonrecursive and a __________ query.
Five batsmen play a match for the Mumbai Indians team. Quinton scored more runs than Rohit but less runs than Kishan. Pollard scored more runs than Hardik but lesser runs than Kishan. Quinton scored more runs than only one batsman. Hardik scored more than Quinton. Who among them scored the highest runs?
Marks of J, L, M, N, R and T are compared. Number of people having marks more than R are same as the number of people having marks less than M. Marks of T and L both are lesser than R but more than M. Marks of only J are more than R. If marks of T are more than L and marks of L are 112, then what can be the marks of R and N respectively?