Question

let
u = {20, 21, 22, 23, 24, 25, 26, 27, 28, 29}
a = {23, 24, 25, 26}
b = {20, 22, 24, 26, 28}
c = {21, 23, 24, 28, 29}
find the set.
b ∩ u =

Explanation:

Step1: Define intersection rule

The intersection of two sets $B$ and $U$, denoted $B \cap U$, is the set of all elements that are in both $B$ and $U$.

Step2: Identify shared elements

All elements of $B$ are contained in $U$, since $B = \{20, 22, 24, 26, 28\}$ and every element here is in $U = \{20, 21, 22, 23, 24, 25, 26, 27, 28, 29\}$.

Answer:

$\{20, 22, 24, 26, 28\}$