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Which of the following statements is/are TRUE? (a) The grammar S → SS | a is ambiguous. (Where S is the start symbol) (b) The grammar S → 0S1 | 01S |e is ambiguous. (The special symbol e represents the empty string) (Where S is the start symbol) (c) The grammar (Where S is the start symbol) S → T / U T → x S y | xy | ϵ U → yT generates a language consisting of the string yxxyy.
In an imaginary mathematical system, symbol '–' stands for addition, symbol '+' stands for division, symbol '×' stands for subtraction, and symbol '÷' stands for multiplication. All other rules of mathematics are the same as in the existing system. What is the value of the following expression? 240 × 72 + 8 ÷ 24 – 6
Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds
Consider the following statements regarding ores: i. Highly reactive metals are separated from their ores by electrolysis. ii. Metals of medium reactivity are separated from their ores by reduction. iii. Metals of least reactivity are separated from their ores by roasting
A treasure chest has less than 100 gold coins. The number of coin is i) One more than a multiple of 3 ii) Two more than a multiple of 4 iii) Three more than a multiple of 5 and iv) Four more than a multiple of 6 How many coins are there in the chest?
Which one of the following is true with regard to a CPU having a single interrupt request line and single interrupt grant line? i) Neither vectored nor multiple interrupting devices is possible. ii) Vectored interrupts is not possible but multiple interrupting devices is possible. iii) Vectored interrupts is possible and multiple interrupting devices is not possible. iv) Both vectored and multiple interrupting devices are possible.
Consider the following variable declarations and definations in C . (i) int var _ 9 =1 ; (ii) int 9 _ var =2; (iii) int + =3; Choose the correct statement w.r.t above variables.
In FORTRAN, the declarations of variables can be modified using the _____ parameter.
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: The primary software tool used to do this is the spreadsheet. Spreadsheet language allows the financial modeller to reconstruct almost any cash flow or revenue stream. Q: A financial model tries to capture all the variables in a particular event. It then quantifies the variables and creates formulas around these variables. R: The model is usually characterised by performing calculations and makes recommendations based on that information. S: Financial modelling is the process by which a firm constructs a financial representation of some, or all, aspects of the firm or given security. 
For a statement S in a program, in the context of liveness analysis, the following sets are defined: USE(S): the set of variables used in S IN(S): the set of variables that are live at the entry of S OUT(S): the set of variables that are live at the exit of S Consider a basic block that consists of two statements, S1 followed by S2. Which one of the following statements is correct?