The population of rabbits on an island is growing exponentially. In the year 2000, the population of rabbits was 220, and by 2004 the population had grown to 350. Predict the population of rabbits in the year 2011, to the nearest whole number.

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.