Alfred invests £1870 into an account that pays 1.75% simple interest per annum. Work out how much interest Alfred will get after 6 years.
= £

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.