Advertisements
Advertisements
प्रश्न
Let A and B be two sets such that n(A) = 45, n(B) = 38 and n(A ∪B) = 70, find: n(A - B).
उत्तर
n(A) = 45, n(B) = 38 and n(A∪ B) = 70
We know that,
n(A-B) = n(A ∪B) - n(B)
n(A – B) = 70 – 38 = 32
APPEARS IN
संबंधित प्रश्न
Write the cardinal number of the following set:
D = Set of letters in the word “PANIPAT”.
The set, given below, state whether it is finite set, infinite set or the null set:
{natural numbers more than 100}
The set, given below, state whether it is finite set, infinite set or the null set:
{multiples of 8}.
The set, given below, state whether it is finite set, infinite set or the null set:
{coins used in India}
Fill in the blank:
Every set is a _____ of itself.
Fill in the blank:
The empty set is a ____ of every set.
If A = {x: x is natural number divisible by 2 and x< 16} and
B = {x:x is a whole number divisible by 3 and x < 18}, find: n(B).
If A = {x: x is natural number divisible by 2 and x< 16} and
B = {x:x is a whole number divisible by 3 and x < 18}, find: n(A – B)
Let A and B be two sets such that n(A) = 45, n(B) = 38 and n(A ∪B) = 70, find: n (A ∩ B).
Let n(A) = 31, n(B) = 20 and n(A ∩ B) = 6, find: n (A - B).
