Xis a 7 letter word, x is impossible 4 god, new babies like x better than breast milk, the poor have x and the rich look for x from the poor, if u eat x you will die, x is more important than ur life. i swear with my life i will give u x if u get d answer, what is x?

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.