There are three number series and in each series one term is missing. You have to find out missing term and then with the help of missing term solve the given questions.

I: 154, 160, X, 222, 294, 404

II: 420, 210, Y, 420, 1680, 13440

III: 65, 75, 95, 130, 185, Z

P: 8a² - Ba + X = 0

Q: 3b² - Cb + Y = 0

Note: Smallest root of the equation P is 1/10th of the largest root. Smallest root is 21/3 in the equation Q.

1) If smallest root of equation P is equal to M so find out ZM = ?

2) If sum of larger root of equation P and Q is equal to N so find out value of 4N