C. 7
Feedback Given sequence is M 4 C @ F 7 1 $ A E N 9 H > 5 ↓ K ʘ 3 ? B J # G 8 D 6 I L 2
When the elements of the first half of the sequence are written in reverse order, we get the following sequence.
5 > H 9 N E A $ 1 7 F @ C 4 M ↓ K ʘ 3 ? B J # G 8 D 6 I L 2
Twentieth element from the left is ? The element which is tenth to the left of '?' is '7'.