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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 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.
There are five classes class 1, class 2, class 3, class 4 and class 5 in a school. They are one above the other. Class 1 is at the bottom, then class 2 above it and so on. Five videos M1, M2, M3, M4 and M5 are displayed in these given classes. Only one video is displayed in a particular class. Each video is displayed only one time. Video M5 is displayed at an even numbered class. Video M2 is displayed at class 1. Video M1 is displayed at the class just below M5. Video M4 is not displayed at even numbered class. Which of the following statement is not correct?
If you want only one memory location to be reserved for a class variable, no matter how many objects are instantiated, you should declare the variable as
If you want only one memory location to be reserved for a class variable, no matter how many objects are instantiated, you should declare the variable as________
 . . . . . . is a class which can only be instantiated once. You can effectively only have one object per . . . . . class in an application.
Which of the following is true?
1. A class can extend more than one class.
2. A class can extend only one class but many interfaces.
3. An interface can extend many interfaces.
4. An interface can implement many interfaces.
5. A class can extend one class and implement many interfaces.
Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Total number of pupils in three classes of a school is 1288. The ratio of children in three classes X, Y, Z is 39 : 64 : 58. In class X number of boys are 26 less than number of girls. Number of boys in class Y is 67.83% more than the number of boys in class X. And, girls in class Z are 25.36% less than the number of girls in class Y. (In calculating number of boys and girls, the decimal value must be rounded off to nearest whole number). Quantity A: Number of boys in class Z. Quantity B: Number of girls in class X. Quantity C: Number of girls in class Y.
Read the statement and select a conclusion from the given alternatives. Statement : Company 'X' had asked its employees to declare income and assets but it has strongly opposed by the employees' his/her union and no employee is going to declare his/her income. Conclusions : I. The employees of the company 'X' do not seem to have any additional income besides their salary. II. The employees' union want all the senior officer to declare their income first.
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : The Government run company had asked its employees to declare their income and assets but it has been strongly resisted by employees union and no employee is going to declare his income.

Conclusions :
I. The employees of this company do not seem to have any additional undisclosed income besides their salary.
II. The employees union wants all senior officers to declare their income first.