Question

if n(a) = 20 n(b) = 25 n (a∩b) =10 then find n (aub)

Answer 1

Given,

n(a) = 20

n(b) = 25

n( a ∩ b ) = 10

-» n(a ∪ b) = n(a) + n(b) - n( a∩b)

-» n(a ∪ b ) = 20 + 25 - 10

-» n( a ∪ b) = 35

Thank You.

Answer 2

Answer:

The value of n(aub) is 35.

Step-by-step explanation:

Given information: n(a) = 20 n(b) = 25 n (a∩b) =10

Using the formula:

$n(a\cup b)=n(a)+n(b)-n(a\cap b)$

$n(a\cup b)=20+25-10$

$n(a\cup b)=45-10$

$n(a\cup b)=35$

Therefore the value of n(aub) is 35.