World population is increasing by 1.2% each year. in 2015, it was 7.26 billion. what will be population be in 2020. round to nearest hundredth billion.

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.

Any pictures or something i need more info