  This paper gives parametric solutions to quartic equations of the
type,(4-3-3),(4-4-4),(4-5-5) and (4-6-6), According to Lander, Parkin, and
Selfridge (2) conjecture, there are non-trivial solutions of the quartic
equations,(4-3-3),(4-4-4),(4-5-5),(4-6-6), where products of the variables on
both sides of the equation are equal.
