Q. If 70% of students in a school play football, 50% play basketball, and 20% play both, what percentage of students play either football or basketball?
A.
100%
B.
90%
C.
80%
D.
70%
Solution
Using inclusion-exclusion, the percentage of students who play either sport is 70% + 50% - 20% = 100%.
Q. If a constraint-based set is defined as 'the set of all x such that x is a multiple of 3 and x < 30', which of the following is an element of this set?
A.
27
B.
29
C.
31
D.
15
Solution
27 is a multiple of 3 and is less than 30, making it an element of the set.
Q. If a constraint-based set is defined as 'the set of all x such that x is a natural number and x < 10', which of the following is a valid representation of this set?
A.
{1, 2, 3, 4, 5, 6, 7, 8, 9}
B.
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
C.
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
D.
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
Solution
The correct representation of the set is {1, 2, 3, 4, 5, 6, 7, 8, 9}, as it includes all natural numbers less than 10.
Q. If a constraint-based set is defined as 'the set of all x such that x is an integer and 1 ≤ x ≤ 5', which of the following is a valid representation of this set?
A.
{1, 2, 3, 4, 5}
B.
{0, 1, 2, 3, 4, 5}
C.
{1, 2, 3, 4, 5, 6}
D.
{2, 3, 4, 5, 6}
Solution
The valid representation of the set is {1, 2, 3, 4, 5} as it includes all integers within the specified range.
Q. If a constraint-based set is defined as {x | x is a letter in the English alphabet and x is a vowel}, which of the following letters is included in this set?
A.
B
B.
C
C.
A
D.
D
Solution
The letter 'A' is included in the set of vowels in the English alphabet.
LRDI (Logical Reasoning and Data Interpretation) is a crucial component of various competitive exams, including the CAT. Mastering this subject can significantly enhance your problem-solving skills and boost your exam scores. Practicing MCQs and objective questions in LRDI helps you familiarize yourself with the question patterns, enabling you to tackle important questions with confidence during your exam preparation.
What You Will Practise Here
Understanding different types of data interpretation graphs and charts
Logical reasoning puzzles and their solutions
Key concepts of sets, Venn diagrams, and their applications
Critical reasoning and argument analysis
Data sufficiency questions and techniques
Caselet-based questions for real-world problem solving
Formulas and shortcuts for quick calculations
Exam Relevance
LRDI is not only essential for the CAT but also appears in various other exams such as CBSE, State Boards, NEET, and JEE. In these exams, you may encounter questions that require you to analyze data sets, interpret graphs, or solve logical puzzles. Common question patterns include multiple-choice questions that assess your ability to draw conclusions from given data, making it vital to practice LRDI (CAT) MCQ questions to excel.
Common Mistakes Students Make
Misinterpreting data from graphs or charts, leading to incorrect answers
Overlooking key information in logical reasoning puzzles
Failing to apply the correct formulas in data interpretation questions
Rushing through questions without proper analysis
Neglecting to practice caselets, which can be tricky
FAQs
Question: What are LRDI (CAT) objective questions with answers? Answer: These are multiple-choice questions designed to test your understanding of logical reasoning and data interpretation concepts, often accompanied by detailed solutions.
Question: How can I improve my LRDI skills for exams? Answer: Regular practice of important LRDI (CAT) questions for exams, along with reviewing your mistakes, can significantly enhance your skills.
Start solving practice MCQs today to strengthen your understanding of LRDI concepts and boost your confidence for the upcoming exams. Remember, consistent practice is the key to success!
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