Ferromagnetism and superconductivity had been thought to be mutually repulsive.rnEven when superconductivity has been thought as arising from magnetic mediationrnof paired electrons, it was believed that superconductivity occurs in the paramagneticrnphase. A great effort has been made to prove this, On the contrary in 2000 therntwo phenomena were found to coexist in UGe2 and in others as URhGe and ZrZn2rnin which the same electrons are responsible for both phenomenon. We study therncoexistence of the two phenomena particularly in ZrZn2 and demonstrate that forrncertain values of the parameters of triplet superconductivity and ferromagnetism is arnpossibility