Question

if n(a)=10,n(a∪b),n(a∩b)
find n(b)

Answer 1

Correct Question : If n(A) = 10, n(A∪B) = 28 and n(A∩B) = 6 then, find the value of n(B)

Solution :

Given that :

n(A) = 10,

n(A∪B) = 28,

and n(A∩B) = 6

To find :

n(B) = ?

As we know that :

The magic formula : n(A∪B) = n(A) + n(B) - n(A∩B)

On putting the values in the formula :

=> 28 = 10 + n(B) - 6

=> 28 = 4 + n(B)

=> n(B) = 28 - 4

=> n(B) = 24

So, the value of n(B) will be 24

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Hope it helps !!

Answer 2

Step-by-step explanation:

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\sqrt{\pi}