If the equation 3x² - kx + 2k = 0 has equal roots, then the value(s) of k is (are)

1. 6
2. 0 only
3. 24 only
4. 0 or 24

If the roots of equation x² - 6x + k = 0 are real and distinct, then value of k is :

1. > -9

2. > -6

3. < 6

4. < 9