51. Data Structure in which one predecessor may have one or more successor , that data structure is called as __________. a. Non Linear Data Structure b. Linear Data Structure c. Primitive Data Structure d. Non Primitive Data Structure

 52. An ADT is defined to be a mathematical model of a user-defined type along with the collection of all ____________ operations on that model a. Primitive b. Structured c. Cardinality d. Assignment

 53. Which of the following abstract data types can be used to represent a many to many relation? a. Plex b. Graph c. Both (a) and (b) d. Tree

 54. When divisions of decimals are involved in a program, these numbers are stored in a. rational numbers b. irrational numbers c. real numbers d. original numbers

 55. In line '300 IF NAME$="***" THEN Average= Total Mark/N' of BASIC program, "***" is classified as a. rational string b. string variable c. irrational string d. string constant  Answer: (d).string constant  56. In line '200 IF NAME$="***" THEN Average= Total Mark/N' of BASIC program, NAME\$ is classified as a. string variable b. string constant c. rational string d. irrational string

 57. When there are range of numbers involved in a program, it can be stored as a. real numbers b. original numbers c. rational numbers d. irrational numbers