In the series W 3 K $ B 8 N T 5 ? R 2 * 9 G 6 # V, which element is fourth to the right of the ninth element from the right end?

There are 18 elements, so the ninth from the right end stands at place 18 − 9 + 1 = 10, which is ?. Four places to its right is place 14, holding the digit 9. G at place 15 is what you reach if you count the starting element itself as the first of the four steps; * at place 13 is where you land either by stopping one step short or by starting from the ninth element from the LEFT (the 5 at place 9); R at place 11 is one step only.