|{⭐🌙☀️}|=🔢

#cardinality #number of elements #size of set

{🍎🍊🍋}→3️⃣

#set size #counting elements #finite set #cardinality definition #number of elements #mapping to quantity

|{👥}|=#️⃣

#cardinality notation #set size #number of elements #magnitude of set #group size