# discrete mathematics questions and answers for gate

Let $${N_r}$$ be the number of binary relations on $$A$$ and ... (a) $$S = \left\{ { ,\, } \right\}$$ is binary relation on set $$A = \left\{ {1,2,3} \right\}$$. Some group (G, o) is known to be abelian. P.S : Without using distributive law check, i think its not feasible for more number of vertices. $\vert A\vert={\textstyle\sum_{k=1}^n}k\begin{pmatrix}n\\k\end{pmatrix}$. R1: ∀a,b ∈ G, aR1b if and only if ∃g ∈ G such that... Let U = {1, 2 ,..., n}. $9$ $8$ $7$ $6$, The number of distinct simple graphs with up to three nodes is $15$ $10$ $7$ $9$. Let $$A$$ and $$B$$ be sets and let $${A^c}$$ and $${B^c}$$ denote the complements of the sets $$A$$ and $$B$$. GATE Discrete Structures Objective Type Questions With Answers (Computer Science) by Panel Of Experts Download Sample PDF. What is logically equivalent to "If Kareena and Parineeti go to the shopping mall then it is raining": If Kareena and Parineeti do not go to the shopping mall then it is not raining. ... A partial order P is defined on the set of natural numbers as following. Let A = {(x, X) | x ∈ X, X ⊆ U}. Consider a set $$U$$ of $$23$$ different compounds in a Chemistry lab. A Binary operation $$\oplus$$ on a set of integers is defined as $$x$$ $$\oplus$$ $$y$$ $$= {x^2} + {y^2}$$. Then. Given statement is : ¬ ∃ x ( ∀y(α) ∧ ∀z(β) ) where ¬ is a negation operator, ∃ is Existential Quantifier with the meaning of "there Exists", and ∀ is a Universal Quantifier with the meaning " for all ", and α, β can be treated as predicates.here we can apply some of the standard results of Propositional and 1st order logic on the given statement, which are as follows : [ Result 1: ¬(∀x P(x)) <=> ∃ x¬P(x), i.e. II. Which of the following statements is true? Which of the following can be the degree of the last vertex? I and III I and IV II and III II and IV, NIELIT 2017 DEC Scientist B - Section B: 52, Let $G$ be a simple undirected graph on $n=3x$ vertices $(x \geq 1)$ with chromatic number $3$, then maximum number of edges in $G$ is $n(n-1)/2$ $n^{n-2}$ $nx$ $n$, Let $G$ be an arbitrary group. education, JNTU World, Notes 9,834 Views. Consider the set S = {a, b, c, d}. Herw x/y denotes integer division. Gate Q&A. 1 answer. GATE CSE Discrete Mathematics's Mathematical Logic, Probability, Set Theory and Algebra, Combinatorics, Linear Algebra, Graph Theory, Calculus Previous Years Questions subject wise, chapter wise and year wise with full detailed solutions provider ExamSIDE.Com $$\p... Let$$X$$and$$Y$$be finite sets and$$f:X \to Y$$be a function. Let$$f:\,A\, \to B$$be a function, and let E and F be subsets of A. What is the minimum value of k that satisfies this requirement? The set$$\left\{ {1,\,\,2,\,\,3,\,\,5,\,\,7,\,\,8,\,\,9} \right\}$$under multiplication modulo 10 is not a group. n n+1 2^{n-1} + 1 n!, NIELIT SCIENTIST B Technical Assistant ANSWER KEY RELEASED. Answer given is option C , But vertex 10 do not have compliment then how it can be a Boolean algebra ? Which one of the following statements is TRUE? Assume all characters to be distinct, prove your answer. Let P(S) denote the power set of a set S. Which of the following is always true? Let R be the set of all binary relations on the set {1,2,3}. State whether the following statement are TRUE or FALSE: Similarly a line L in a circuit is said to have a stuck-at-1 fault if the line permanently has a logic value 1. \frac{n(n-1)} {2} 2^n n! 2^\frac{n(n-1)} {2} , Consider the following well-formed formulae: \neg \forall x(P(x)) \neg \exists x(P(x)) \neg \exists x(\neg P(x)) \exists x(\neg P(x)) Which of the above are equivalent? Linear Algebra. Consider the first order predicate formula \varphi:  \forall x\lbrack(\forall z\;z\vert x\Rightarrow((z=x)\vee(z=1)))\Rightarrow\exists w\;(w>x)\wedge(\forall z\;z\vert w\Rightarrow((w=z)\vee(z=1)))\rbrack  Here 'a\vert b' denotes that ‘a divides b’, where a and b are integers. The number of functions from an$$m$$element set to an$$n$$element set is, The number of equivalence relations on the set$$\left\{ {1,2,3,4} \right\}$$is. Denote by N the number of functions f... How many onto (or subjective) functions are there form an n-element$$(n\, \ge \,2)$$set to a 2-element set ? Consider the following relation on subsets of the set S integers between 1 and 2014. A binary relation R on \mathbb{N} \times \mathbb{N} is defined as follows: (a, b) R(c, d) if a \leq c or b \leq d. Suppose$$$$is the power set of the set$$S = \left\{ {1,2,3,4,5,6,} \right\}. $, 2020 © GATE-Exam.in | Complete Solution for GATE, Combinatorics: Counting, Recurrence Relations, Generating Functions. Tags: GATE Discrete Structures Objective Type Questions With Answers (Computer Science) by Panel Of Experts GATE Computer Science & Information Technology GATE Computer Science & Information Technology English GATE Computer Science & Information … Three candidates, Amar, Birendra and Chanchal stand for the local election. }{2^n}\) $$^{2n}\mathrm{C}_n$$, Let$A$be a sequence of$8\$ distinct integers sorted in ascending order. negation of "for …

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