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Consider the following policies for preventing deadlock in a system with mutually exclusive resources. I. Processes should acquire all their resources at the beginning of execution. If any resource is not available, all resources acquired so far are released II. The resources are numbered uniquely, and processes are allowed to request for resources only in increasing resource numbers III. The resources are numbered uniquely, and processes are allowed to request for resources only in decreasing resource numbers IV. The resources are numbered uniquely. A process is allowed to request only for a resource with resource number larger than its currently held resources Which of the above policies can be used for preventing deadlock?
Ten people are sitting in two parallel rows 1 and 2. A, B, C, D and E are sitting in row 1 facing north, and V, W, X, Y and Z are sitting in row 2 facing south, in such a way that each member in row 1 faces a member of row 2. A sits second from the right end of the row. W faces an immediate neighbour of A. X sits third to the right of W. The one who faces X, sits to the immediate right of B. Only one person sits between B and C. V sits to the immediate right of Y. D does not sit at any of the extreme ends of the row. Who faces Z?
The digits 1 to 9 are arranged in three rows in such a way that each row contains three digits, and the number formed in the second row is twice the number formed in the first row; and the number formed in the third row is thrice the number formed in the first row. Repetition of digits is not allowed. If only three of the four digits 2, 3, 7 and 9 are allowed to use in the first row, how many such combinations are possible to be arranged in the three rows?
There are two rows, each containing 3 numbers. Some rules are given below to be used for obtaining the resultant number for each row separately. Apply the rules for each row from left to right and answer the question. Rules: i. If an even number is followed by an even number, the first is to be subtracted from the second. ii. If an odd number is followed by an odd number, both are to be added. iii. If an odd number is followed by an even number, the even number is to be subtracted from the square of the odd number. iv. If an even number is followed by an odd number, the odd number is to be subtracted from the even number. Row I: 28, 19, 12 Row II: 13, 7, 32 What is the average of the resultant numbers of the first row and the second row?
There are two rows, each containing 3 numbers. Below are some rules to be used to get the resultant number for each row separately. Use the rule from left to right for each row and find the answer to the question. Rule: 1. If an even number is followed by an even number, then the first number will be subtracted from the second. 2. If an odd number is followed by an odd number, then both will be added. 3. If an odd number is followed by an even number, then the even number will be subtracted from the square of the odd number. 4. If an even number is followed by an odd number, then the odd number will be subtracted from the even number. Row I: 9,11, 34 Row II: 16, 9, 8 What is the difference between the resultant numbers in the first row and the second row
In a given relationship R, if an attribute A uniquely defines all other attributes, then the attribute A is a key attribute which is also known as the _________ key.
During a party, a game is being played. For the game 9 people from A to I (mix of boys and girls) have to stand in vertical row. Boys are wearing Red t-shirts and girls are wearing Pink t-shirts. The row starts with pink t-shirt. Boys and girls stand alternately in the row. Each position in the row can occupied by one person only 1) A stands seven places before B. 2) Third pink t – shirt is C. 3) Second boy after C is D. 4) Fourth place in the row is occupied by E. 5) F stands ahead of A. 6) G stands between C and A 7) I is girl Which of the following is a pair of boys?
Eight houses, A, B, C, D, E, F, G and H, are in two parallel rows, I and II, with 4 houses in each row. The houses in each row are at equal distances. The four houses in row-I are facing north, and are facing the four houses in row-II. B in row-I faces F and is not at an extreme end. H is adjacent to F and is facing D. C and E are diagonally opposite. E is facing A, who is adjacent to H. Which of the following statements is true?
Ten students A, B, C, D, E, F, G, H, I and J are sitting in two rows facing the blackboard. There are five students in each row. E is between B and G. I is at the right corner of the front row. A is to the immediate left of B. E sits in the front row. C is at the extreme left in the second row. F is between H and D. H is to the immediate right of J. In which sequence are the five persons in the front row sitting?
Six friends Ajay, Goarav, Adharav, Saurav, Pari, and Kashvi are sitting in two parallel rows containing three people each. Ajay, Goarav and Adharav are sitting in row-1 facing north and Saurav, Pari and Kashvi are sitting in row-2 facing south (but not necessarily in the same order). Thus, each person sitting in row-1 face another person sitting in row-2. Ajay, Goarav, Saurav and Pari are sitting at extreme ends. Saurav does not face Goarav. Ajay is sitting at extreme right end. Who is sitting at extreme right of row-2?