Elmer loves! He started with 150 rabbits but the number keeps doubling every year. How many rabbits will Elmer have after five years? Write an equation and show work.

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.