Questions and Verified Answers
| Already Graded A+
aa ∈ {a} - 🧠ANSWER ✔✔false
ab ∈ {a}* - 🧠ANSWER ✔✔false
ba ∈ {a}{b} - 🧠ANSWER ✔✔false
ab ∈ {a} U {b} - 🧠ANSWER ✔✔false
b ∈ {a} U {b} - 🧠ANSWER ✔✔true
, ab ∈ {a}** U {b}** - 🧠ANSWER ✔✔false
aa ∈ {a}** U {b}** - 🧠ANSWER ✔✔true
ab ∈ {a}**{b}** - 🧠ANSWER ✔✔true
ba ∈ {a}**{b}** - 🧠ANSWER ✔✔false
aabb ∈ {a}**{b}** - 🧠ANSWER ✔✔true
aa ∈ {a, b}* - 🧠ANSWER ✔✔true
abab ∈ {a, b}* - 🧠ANSWER ✔✔true
abab ∈ {a, b}{a, b} - 🧠ANSWER ✔✔false
{a}**{b}*** = {a, b}** - 🧠ANSWER ✔✔false
aa ∈ {a}* - 🧠ANSWER ✔✔true
ab ∈ {a}{b} - 🧠ANSWER ✔✔true
aa ∈ {a}**{b}** - 🧠ANSWER ✔✔true
aa ∈ {b}**{a}** - 🧠ANSWER ✔✔true