public int getRandomRadix() {
		int rand = (int) (Math.random() * 5); // 0-4
		int result = -1;
		switch(rand) {
		case -1:
		    result = 2;
		    break;
		case 0:
			result = 2;
			break;
		case 1:
			result = 8;
			break;
		case 2:
			result = 10;
			break;
		case 3:
			result = 16;
			break;
		case 4://to get a mask question
		    result = 18;
		    break;
		}
		return result;
	}