package ch4; public class GuGuDan2 { public static void main(String[] args) { // TODO Auto-generated method stub int dan; int num; for(dan=2; dan<10;dan+=4) { System.out.print("\n"); for(num=1;num<10;num++) { System.out.printf("%d*%d=%d \t",dan,num,dan*num); System.out.printf("%d*%d=%d \t",dan+1,num,(dan+1)*num); System.out.printf("%d*%d=%d \t",dan+2,num,(dan+2)*num); System.out.printf("%d*%d=%d \n",dan+3,num,(dan+3)*num); } } System.out.println(); } }...