How do you plan to solve it?
module sr_latch_nor ( input S, input R, output reg Q, output reg Qn ); // Write your code here always @(*) begin if (S&&~R) begin Q=1'b1; Qn=1'b0; end else if (~S&&R) begin Q=1'b0; Qn=1'b1; end else if (S&&R) begin Q=1'b0; Qn=1'b1; end end endmodule