In a certain game of chance, a square board with area 1 is colored with sectors of either red or blue. A player, who cannot see the board, must specify a point on the board by giving an x-coordinate and a y-coordinate. The player wins the game if the specified point is in a blue sector. The game can be arranged with any number of red sectors, and the red sectors are designed so that R1 = (9/10)t, where R1 is the area of ith red sectorCalculate the minimum number of red sectors that makes the chance of a player winning less than 20%.