(a,b) what is a?
Explanation: A is called the domain.
(a,b) what is b?
Explanation: B is called the Range.
R is said to be reflexive if aRa is true for every a in A;
Explanation: All the elements of A are related with
itself by relation R, hence it is a reflexive relation.
If every aRb implies bRa then a relation R will be a symmetric relation.
Explanation: a is related to b by R, and if b is also related to a by the
same relation R).
If every aRb and bRc implies aRc, then the relation is transitive
Explanation: a is related to b by R, and b is related to c by R, and similarly for a and c.
The smallest set A such that A ∪ {1, 2} = {1, 2, 3, 5, 9} is
Explanation: Given A ∪ {1, 2} = {1, 2, 3, 5, 9}. Hence A = {3,5,9}.
If a set A has n elements, then the total number of subsets of A is.
Explanation: Number of subsets of A = nC0 + nC1+ . . . . . + nCn = 2n.
If A ∩ B = B, then
Explanation: Since A ∩ B = B , hence B ⊂ A .
Empty set is a
Explanation: Empty set is a finite set.
f A, B and C are any three sets, then A – (B ∪ C) is equal to
Explanation: it is De’ Morgan law.
A = {x: x ≠ x }represents
Explanation: That is a fact.
If A, B, C be three sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C, then
Explanation: Transition Law.
The number of proper subsets of the set {1, 2, and 3} is.
Explanation: Number of proper subsets of the set {1, 2, 3) = 2³ – 1 = 7.
If A and B are any two sets, then A ∪ (A ∩ B) is equal to
Explanation: A ∩ B ⊆ A Hence A ∪ (A ∩ B) = A.
If A, B and C are any three sets, then A × (B ∪ C) is equal to.
Explanation: It is distributive law.
Use Code STAYHOME200 and get INR 200 additional OFF

Use Coupon Code 








