st. mary's private school fees of 10,00 per term have been increased by 20%. Find the total fees a parent pays for his child for the academic year of 3 terms.

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.