Question

if a and b are two finite sets then n(aUb)=n(a)+n(b)-?
​

Answer 1

Answer:

n(a intersection b)

Step-by-step explanation:

n(a Union b) = n(a)+ n(b) - n(a intersection b)

Answer 2

SOLUTION

TO FILL IN THE BLANK

If A and B are two finite sets then

n( A ∪ B) = n(A) + n(B) - ______

EVALUATION

We know that set is a well defined collection of distinct objects of our perception or of our thought to be conceived as a whole

We know that ,

n( A ∪ B) = n(A) + n(B) - n( A ∩ B)

Let us check it

A = { 1 , 2 } , B = { 2 , 3 }

A ∩ B = { 2 }

A ∪ B = { 1 , 2 , 3 }

Then

n(A) = 2

n(B) = 2

n( A ∩ B) = 1

n( A ∪ B) = 3

3 = 2 + 2 - 1

Thus we have

n( A ∪ B) = n(A) + n(B) - n( A ∩ B)

FINAL ANSWER

n( A ∪ B) = n(A) + n(B) - n( A ∩ B)

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ If P and Q are two sets such that n(P) = 12, n(Q - P) = 7, then which among the following is the value of n(PU Q)?

https://brainly.in/question/31763496

If n(A) = 300, n(A∪B) = 500, n(A∩B) = 50 and n(B′) = 350, find n(B) and n(U).

https://brainly.in/question/4193770