which of the following is equivalent to the set {monday, tuesday, wednesday, thursday, friday, saturday, sunday}?
(you may select more than one)
question 4 options:
{x | x is one of the seven wonders of the ancient world}
{x | x is one of the six nobel prize categories}
{x | x is the number of humans who can breathe unassisted underwater}
{x | x is a letter of the alphabet
{x | x is one of the two lead singers of van halen}
{x | x is a day of the week}