Book cover for Computer Science and Information Technology

Computer Science and Information Technology

Trishna Knowledge Systems

ISBN #9789352868469

2018 Edition

1,832 Questions

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27,660 Students Helped

Homework Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

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Learning Objectives

Key Concepts

CONCEPT

DEFINITION

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Example Problems

Example 1

Let $p:$ Prasad does not play carroms. $q:$ Raju watches a movie. The symbolic form of 'Prasad plays carroms or Raju does not watch a movie' is (A) $(\sim p) \Rightarrow(\sim q)$ (B) $\sim(p \wedge q)$ (C) $\sim(p \vee q)$ (D) $(\sim p) \wedge(q)$

Example 2

Select the correct alternative from given choices. The truth value of $\sim q \Rightarrow(\sim p \vee \sim F)$ is (A) $F$ (B) $T$ (C) Either (A) or (B) (D) None of these

Example 3

Select the correct alternative from given choices. The negation of a statement, 'If you are lazy, then you won't get the marks', is (A) 'You are not lazy or you wont get the marks.' (B) 'You are lazy or you will get the marks.' (C) 'You are lazy and you will get the marks.' (D) 'You are not lazy and you will get the marks.'

Example 4

Select the correct alternative from given choices. The negation of the statement 'All A's are B's' is (A) All A's are not B's. (B) Only one $\mathrm{A}$ which is not $\mathrm{B}$. (C) There is atleast one A which is B. (D) Some A's are not B's.

Example 5

The negation of the statement 'Pasha is handsome or he is intelligent' is (A) Pasha is either handsome or intelligent. (B) Pasha is not handsome and he is not intelligent. (C) Pasha is not handsome and he is intelligent. (D) Pasha is not handsome or he is intelligent.

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Step-by-Step Explanations

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Common Mistakes