Hal forgot the number of people at the basketball game. he does remember that the number had four digits and a 3 in the tens place. write a number that hal could be thinking of

He could be thinking of 5,637 people at the game

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.