 formula_33.Find the minimum of formula_27.Below is the 29th problem in Mathematics subject for all applicants of CSAT held in 1996 that is considered to be the hardest one in history.It had correct response rates of 0.08%.If two equations formula_35 and formula_36 have 7 and 9 solutions respectively and a setformula_37 is an infinite set, formula_38, the number of elements in formula_39's subsetformula_40, varies according to the values of formula_41 and formula_42.