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What happens if the base condition isn’t defined in recursive programs?
Assume statements S1 and S2 defined as: S1: L2-L1 is recursive enumerable where L1 and L2 are recursive and recursive enumerable respectively. S2: The set of all Turing machines is countable. Which of the following is true?
For any two languages L1 and L2 such that L1 is context-free and L2 is recursively enumerable but not recursive, which of the following is/are necessarily true? I. L̅1 (complement of L1) is recursive II. L̅2 (complement of L2) is recursive III. L̅1 is context-free IV. L̅1 ∪ L2 is recursively enumerable
For transistor action (a) Base, emitter, and collector regions should have similar size and doping concentrations. (b) The base region must be very thin and lightly doped. (c) The emitter-base junction is forward biased and the base-collector junction is reverse biased. (d) Both the emitter-base junction as well as the base-collector junction are forward biased. Which one of the following pairs of statements is correct? 
interface Base{ boolean m1 (); byte m2(short s);}

which two code fragments will compile?
1. interface Base2 implements Base {}2. abstract class Class2 extends Base { public boolean m1(){ return true; }}3. abstract class Class2 implements Base {}4. abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }}5. abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}
One of the biggest threats to a company’s porductivity is absenteeism. Student show that companies with in-house child-care programs see fewer absences among their employees who are parents than companies without such programs. Therefore, many companies could boost their productivity by starting in-house child-care programs. Which of the followings, if true, most weakens the above argument?
A right prism of the base equilateral triangle is cut into n equal pieces with a line parallel to base in such a way that base surface area of all the pieces becomes 8 times of the base area of the original prism. If the side of the base of the original prism is 4 cm and volume is 96√3 cm3, then what is the lateral surface area of each piece?
Which of the following statement(s) is/are FALSE? (i) There exists a recursively enumerable language whose complement is not recursively enumerable. (ii) If a language L is recursive, then its complement is NOT recursive.
The following grammar G is left recursive. E → E + T | T T → T * F | F F → (E) | id Which of the following is a correct left-recursive variant of G? E → TE' E' → T + E' 
Which of the following statements are TRUE? I. Top-down parsers are equipped to handle left recursive grammar. II. LALR parser is more powerful than an SLR parser. III. Recursive descent parsing is an example of top-down parsing.