Select Goal &
City
Select Goal
Explore
Question:
If A and B are disjoint sets and \(n(A)=4\) ,\(n(A∪B)=7\), then the value of \(n(B)\) is
If A and B are disjoint sets and \(n(A)=4\) ,\(n(A∪B)=7\), then the value of \(n(B)\) is
Updated On: May 24, 2024
- 7
- 4
- 3
- 11
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The correct option is (C): 3
Was this answer helpful?
0
0
Top Questions on Operations on Sets
- Let the sets A and B denote the domain and range respectively of the function \(f(x)=\frac{1}{\sqrt[x]-x}\) where [x] denotes the smallest integer greater than or equal to x . Then among the statements
(S1) : A ∩ B = (1, ∞) – N and
(S2) : A ∪ B = (1, ∞)- JEE Main - 2023
- Mathematics
- Operations on Sets
- Let A be a set containing n elements, A subset P of A is chosen and set A is reconstructed by replacing the elements of P. A subset Q of A is chosen again. The number of ways of choosing P and Q such that Q contains just one element more than P is
- WBJEE - 2023
- Mathematics
- Operations on Sets
- If A= {P,O,L,Y,T,E,C,H,N, I} and B = {E, X, A, M}, then \(A∩B =\)
- TS POLYCET - 2023
- Mathematics
- Operations on Sets
- If A = {1, 2, 3, 4, 5} and B={4, 5, 6, 7} then A-B=__
- TS POLYCET - 2023
- Mathematics
- Operations on Sets
- Let A,B,C are subsets of set X. Then consider the validity of the following set theoretic statement:
- WBJEE - 2023
- Mathematics
- Operations on Sets
View More Questions
Questions Asked in AP POLYCET exam
- If the centroid of a triangle formed by the points \((a,b), (b, c)\) and \((c,a)\) is at the origin, then \(a^3+b^3+c^3 =\)
- AP POLYCET - 2024
- Triangles
- If a sin 45°= b cosec 30°, then the value of \(\frac {a^4}{b^4}\) is
- AP POLYCET - 2024
- Trigonometry
- The ratio of the sum and product of the roots of the quadratic equation \(7x^2-12x+18=0\) is
- AP POLYCET - 2024
- Quadratic Equations
- If the slope of the line joining the points (4,2) and (3,-k) is -2, then the value of k is
- AP POLYCET - 2024
- Slope of a line
- If 25 cm each is the object and image distances due to convex lens, then its focal length is
- AP POLYCET - 2024
- Light - Reflection and Refraction
View More Questions
SUBSCRIBE TO OUR NEWS LETTER
COLLEGE NOTIFICATIONSEXAM NOTIFICATIONSNEWS UPDATES
Download the Collegedunia app on 
© 2024 Collegedunia Web Pvt. Ltd. All Rights Reserved