Page 683 - Computer science 868 Class 12
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Question 10:
                 A superclass Number is defined to calculate the factorial of a number. Define a subclass Series to find the sum of the series S = 1! + 2! +
                 3! + 4! + The details of the members of both the classes are given below:
                 Class name                                    :  Number
                 Data members/instance variables:
                 n                                             :   to store an integer number.
                 Member functions/methods:
                 Number(int num)                               :   parameterised constructor to initialize the data member n = num.
                 int factorial (int a)                         :   returns the factorial of a number (factorial of n = 1 × 2 × 3 × ... × n).
                 void display()                                :   displays the data member
                 Class name                                    :  Series
                 Data members/instance variables:
                 sum                                           :   to store the sum of the series.
                 Member functions/methods:
                 Series(...)                                   :    parameterised constructor to initialise  the data members of  both  the
                                                                 classes.
                 void calSum()                                 :   calculates the sum of the given series.
                 void display()                                :   displays the data members of both the classes.
                 Assume that the superclass Number has been defined. Using the concept of inheritance, specify the class Series giving details of the
                 constructor, void calSum() and void display().
                 Question 11:
                                                            2
                       i)  What is the difference between O(N) and O(N )                                               [2]
                      ii)  Answer the following questions from the diagram of a Binary Tree given below:
                                                                       A


                                                             H                     J


                                                     C               F          K


                                                       D           G                L


                                                          E          H
                          (a)  The root of the tree.                                                                   [1]
                          (b)  Left subtree under H                                                                     [1]
                          (c)  Inorder traversal of the tree                                                           [1]

























                                                                                                                       681
                                                                                            ISC Specimen Question Paper  681
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