What does pi equal to?

Pi goes on forever ( doesn't end )

3.14159265359

but it stands for 3.14

It is important because sometimes ur dna needs to multiply

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.