>
Exams
>
Computer Science & Information Technology
>
Set Theory
>
the number of binary relations on a set with 3 ele
Question:
The number of binary relations on a set with 3 elements is
Show Hint
The number of binary relations on a set of \(n\) elements is \( 2^{n^2} \), as each pair of elements can either have a relation or not.
AP PGECET - 2024
AP PGECET
Updated On:
May 4, 2025
8
16
512
128
Hide Solution
Verified By Collegedunia
The Correct Option is
C
Solution and Explanation
The number of binary relations on a set with \(n\) elements is given by \( 2^{n^2} \). For a set with 3 elements, the calculation is: \[ 2^{3^2} = 2^9 = 512 \]
Therefore, the correct answer is 3. 512.
Download Solution in PDF
Was this answer helpful?
0
0
Top Questions on Set Theory
In a class of 150 students, 75 students chose physics, 111 students chose mathematics and 40 students chose chemistry. All students chose at least one of the three subjects and at least one student chose all three subjects. The number of students who chose both physics and chemistry is equal to the number of students who chose both chemistry and mathematics, and this is half the number of students who chose both physics and mathematics. The maximum possible number of students who chose physics but not mathematics, is
CAT - 2025
Quantitative Aptitude
Set Theory
View Solution
In a survey of 250 people about three activities (Reading, Sports, Travel), the following data are given:
130 like Reading,
110 like Sports,
120 like Travel,
55 like both Reading and Sports,
50 like both Sports and Travel,
45 like both Reading and Travel,
25 like all three.
How many like only Travel?
CAT - 2025
Data Interpretation & Logical Reasoning (DILR)
Set Theory
View Solution
A group of 120 students attend at least one of three workshops: Data, Logic, and Verbal.
48 attend Data, 60 attend Logic, 50 attend Verbal.
20 attend both Data & Logic, 15 attend both Logic & Verbal, 12 attend both Data & Verbal, and 8 attend all three.
How many students attend exactly one workshop?
CAT - 2025
Data Interpretation & Logical Reasoning (DILR)
Set Theory
View Solution
Let \( S \) be the set of all the words that can be formed by arranging all the letters of the word GARDEN. From the set \( S \), one word is selected at random. The probability that the selected word will NOT have vowels in alphabetical order is:
JEE Main - 2025
Mathematics
Set Theory
View Solution
The number of non-empty equivalence relations on the set \(\{1,2,3\}\) is :
JEE Main - 2025
Mathematics
Set Theory
View Solution
View More Questions
Questions Asked in AP PGECET exam
Digital signatures provide ________.
AP PGECET - 2025
Computer Networks
View Solution
A number is selected randomly from each of the following two sets:
{1, 2, 3, 4, 5, 6, 7, 8}, {2, 3, 4, 5, 6, 7, 8, 9}
What is the probability that the sum of the numbers is 9?
AP PGECET - 2025
Probability and Statistics
View Solution
The ratio of the ages of A and B is 5:3. After 6 years, their ages will be in the ratio 6:4. What is the current age of A?
AP PGECET - 2025
Ratio and Proportion
View Solution
________ function is performed by data input/capture subsystem of GIS.
AP PGECET - 2025
Geographic Information System - GIS
View Solution
Consider the system of equations:
\[ x + 2y - z = 3 \\ 2x + 4y - 2z = 7 \\ 3x + 6y - 3z = 9 \]
Which of the following statements is true about the system?
AP PGECET - 2025
Linear Algebra
View Solution
View More Questions