What is the probability a day in the 70s is a monday? which set forms the intersection of tuesdays in the 80s? what is the probability an observation picked at random is both a sunday and more than 90 degrees?

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Ican’t sorry i would if i could