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Discrete Structures 2

Showing 76-106 of 106 answers

Two finite state machines are said to be equivalent if they
  • have same number of edges
  • have same number of states and edges Correct
  • recognize same set of tokens
  • have same number of states
What is the 8th term in the binomial expansion of (2x+y)16?
  • 5,857,280 x7 y9
  • 5,857,280 x8 y8
  • 5,857,280 x9 y7 Correct
  • 5,857,280 x16 y16
What is the coefficient of aby98 in the binomial expansion of (ab+y)99?
  • 99 Correct
  • 98
  • 100
  • 4,851
What is the coefficient of x101 y99 in the expansion of (2x-3y)200?
  • C(200,101) (2)101 (-3)99
  • C(200,101) (2)99 (-3)101
  • C(200,99) (2)101 (-3)99 Correct
  • C(200,99) (2)99 (-3)101
What is the maximum possible number of nodes in a binary tree at level 6
  • 32
  • 16
  • 64 Correct
  • 128
What is the negation of a tautology?
  • Contradiction Correct
  • Unary Negation
  • Implication
  • Binary Negation
What is the probability of arriving at a traffic light when it is red if the red signal is flashed for 30 sec, the yellow signal for 5 sec, and the green signal for 40 sec?
  • The probability is 040 Correct
  • The probability is 050
  • The probability is 045
  • The probability is 035
When inorder traversing a tree resulted e a c k f h d b g; the preorder traversal would return.
  • faekcdhgb Correct
  • abcdefghk
  • eafkhdcbg
  • faekcdbhg
Which concept considers the arrangement of objects / elements in a set?
  • permutations Correct
  • pigeonhole
  • counting theory
  • combination
Which is not an invariant when determining if graphs are isomorphic?
  • same degree of vertices
  • existence of closed loops Correct
  • same number of edges
  • same number of vertices
Which logical operator represents the statement "if and only if"?
  • biconditional Correct
  • conditional
  • implication
  • conjunction
Which of is a formula for the sequence 3, 6, 12, 24, 48, ...? Assume that the first term in the sequence is called a0?
  • an = 3(n+1)
  • an = 3n + 3
  • an = 3 =C2=B7 2n-1
  • none of the given Correct
  • an = 2an-1
Which of the following applies Last In Last Out?
  • None of the choices Correct
  • Stack
  • Linked List
  • Queue
Which of the following describes a Stack data structure?
  • A Stack is a Last In First Out
  • Stack uses the push() and pop() function
  • All of the choices Correct
  • A Stack in an ordered list
Which of the following describes an algorithm?
  • algorithm can be a programming language
  • algorithm is used to store data
  • executed in a way to get a required output Correct
  • algorithm is software that used to compute complex numbers
Which of the following does not describes a linked list?
  • None of the choices Correct
  • A linked list can contain any data type
  • A linked list can be sorted
  • A linked list can be unsorted
Which of the following does NOT describes non-linear data structure?
  • Data can be traverse in singular run Correct
  • Tree is an example of a non-linear data structure
  • Each item is attached with many other items
  • Implementation is difficult
Which of the following graphs is not a characteristics of isomorphic graphs?
  • Graphs with the same number of vertices
  • Graphs with the same number of edges
  • Graphs with different adjacency matrices Correct
  • Graphs with the same adjacency matrices
Which of the following is a linear data structure?
  • Stack Correct
  • Graph
  • None of the choices
  • Binary Tree
Which of the following is a recurrence relation for the sequence that begins 3, 6, 9, 12, 15, ...?
  • an = 3an-1
  • an = an-2 + 6 Correct
  • an = an-1 + 3n
  • an = 3n
Which of the following is an example of data structure?
  • Collection of books
  • Computer memory allocation
  • Stack of plates
  • all of the choices Correct
Which of the following is NOT a characteristic of a data type?
  • set of values
  • set of representation
  • set of functions Correct
  • set of operations
Which of the following is not a component of a data structure?
  • None of the choices Correct
  • Operations
  • Algorithm
  • Storage Structures
Which of the following is not a recurrence relation?
  • primality of numbers Correct
  • fibonacci sequence
  • simple and compound interest computations
  • geometric sequence
Which of the following is not the part of ADT description?
  • Operations
  • Data
  • None of the choices Correct
  • All of the choices
Which of the following programming language is NOT used to implement a data structure?
  • C
  • None of the choices Correct
  • Python
  • Ruby
Which of the following statement is correct?
  • Stack applies the FIFO
  • Queue applies the FILO
  • Stack applies the LIFO Correct
  • Queue applies the LIFO
Which of the following statements about binary trees is NOT true? 
  • Every binary tree has at least one node Correct
  • No correct answer
  • Every non-root node has exactly one parent
  • Every node has at most two children
  • Every non-empty tree has exactly one root node
Which of the proposition is is:
  • all of the given
  • A contradiction
  • Logically equivalent to  Correct
  • A tautology
Which rule states that if (k + 1) or more objects are placed into k boxes, then there is at least one box containing two or more of the objects?
  • product rule
  • sum rule
  • pigeonhole principle Correct
  • inclusion-exclusion
You have 12 balls, numbered 1 through 12, which you want to place into 4 boxes, numbered 1 through 4. If boxes can remain empty, in how many ways can the 12 balls be disturbed among the 4 boxes?
  • C(12,4)
  • 12! =C2=B7 4!
  • 124
  • 412 Correct
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