let q = {-2, -1, 1, 2} and r = {-5, -3, 0, 3,...
let q = {-2, -1, 1, 2} and r = {-5, -3, 0, 3, 5}. what is q ∩ r? {-5, -3, -2, -1, 0, 1, 3, 5} {-5, -3, -2, -1, 0, 1, 5} {-5, -3, -2, -1, 0, 1, 2, 3, 5} ∅
Answer
# Answer:
$\varnothing$
# Explanation:
## Step1: Recall intersection definition
The intersection $Q\cap R$ is the set of elements that are in both $Q$ and $R$.
## Step2: Check elements in sets
Elements of $Q=\{- 2,-1,1,2\}$ and $R =\{-5,-3,0,3,5\}$. There are no common elements. So $Q\cap R=\varnothing$.