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Which of the following is/are true for an abstract class?
1. A class is declared abstract by prefacing the definition with the word abstract.
2. A class is declare abstract by using the keyword implements.
3. It is a class that really isn’t supposed to ever be instantiated but instead serves as a base class.
4. Attempting to instantiate an abstract class results in an error.
Which of the following is/are true for an abstract class? i) Abstract classes in PHP are declared with the help of abstract keyword. ii) A class is declare abstract by using the keyword implements. iii) It is a class that really isn’t supposed to ever be instantiated but instead serves as a base class. iv) Attempting to instantiate an abstract class results in an error.
Which two of the following are legal declarations for abstract classes and interfaces?
1. final abstract class Test {}
2. public static interface Test {}
3. final public class Test {}
4. protected abstract class Test {}
5. protected interface Test {}
6. abstract public class Test {} 
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) }}
In a certain code language, “Mayank is happy” is written as “ku tap pi”, “happy are make” is written as “tap le fu” and “make is happy” is written as “fu pi tap”. What is the code for “happy” in that code language?
In a certain code language, “Mayank is happy” is written as “ku tap pi”, “happy are make” is written as “tap le fu” and “make is happy” is written as “fu pi tap”. What is the code for “happy” in that code language?
The question below consists of a set of labelled sentences in which first and the last sentence is given. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. S1- Better standard of living for the family is one of the advantages of women/female education. P- An educated mother will earn as good as the father of the family and will look after the financial needs of her family in a much better way.  Q- It doesn’t take a mathematician to conclude that a family relying on double wages is more content and happy than a family which relies on the income of a single parent. R- Women are more concerned about the health of their family than men and have a great sense of hygiene too.  S- Two incomes under the same roof will improve the quality of living and also ensure better education and facilities to the children, not to mention that a happy family will ultimately lead to a happy society. S6- Even working women are constantly concerned about their family’s health and don’t compromise with it at any cost.
What is the output of following program? abstract class Sum { public abstract int sumOfTwo(int n1, int n2); public abstract int sumOfThree(int n1, int n2, int n3); public void disp( ){ System.out.println("Method of class Sum"); } } class DemoAbstract1 extends Sum { public int sumOfTwo(int num1, int num2) { return num1+num2; } public int sumOfThree(int num1, int num2, int num3) { return num1+num2+num3; } public static void main(String args[ ]){ Sum obj = new DemoAbstract1( ); System.out.println(obj.sumOfTwo(3, 7)); System.out.println(obj.sumOfThree(4, 3, 19)); obj.disp( ); } }
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. The quest for a _____ life engrosses every human being on this earth. Everyman tends to define a happy life in a _____ individualistic fashion. _____have attempted to define a happy life in various terms. Hedonists have a _____ notion that happiness lies in the _____ of physical appetites. on this earth. Everyman tends to define a happy life in a _____ individualistic fashion.
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. The quest for a _____ life engrosses every human being on this earth. Everyman tends to define a happy life in a _____ individualistic fashion. _____have attempted to define a happy life in various terms. Hedonists have a _____ notion that happiness lies in the _____ of physical appetites. _____have attempted to define a happy life