The fifteenth element from the right is ↓.The element which is tenth to the right of this element is D.

There is only one letter i.e E, which is immediately followed and immediately preceded by symbol.

The 9th element to the right of the 19th element from the left end is      (9 + 19)^th = 28^th from the left end, that is 3.

In all choices except in (2), Q < M definitely follows.

Given sequence isM 4 C @ F 7 1 $ A E N 9 H > 5 ↓ K ʘ 3 ? B J # G 8 D 6 I L 2When 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 2Twentieth element from the left is ?
The element which is tenth to the left of '?' is '7'.

The following are the expressions which the symbols are used.A $ B => A < B.A © B => A > B.A @ B => A ≤ B.A * B => A ≥ B.A # B => A = B.
D * F => D ≥ F.F @ G => F ≤ G.G © H => G > H.H $ T => H < T.By combining the above statements We get,D ≥ F ≤ G > H < T.Conclusion I: D # G => D = G, does not follow.Conclusion II: F @ H => F ≤ H, does not follow.Conclusion III: G © T => G > T, does not follow.Conclusion IV: D * H => D ≥ H, does not follow.None follows.

The given word is:P    O    L    I    C    YAlphabetical order:C    I    L    O    P    YTwo letters remain in the same position.

The given number is:2   9   8   4   9   0   7   2   1Descending order of digit is:9   9   8   7   6   4   2   2   1Four digits remain in the same position.

The given word is:   I D E N T I F Y
Alphabetical order: D E F I I N T Y
One letter remain in the same place.
Seven letters do not remain in the same position.

P @ Q => P < QP # Q => P ≥ QP $ Q => P = QP © Q => P ≤ QP % Q => P > Q
F @ G => F < G.G # J => G ≥ J.H @ J => H < J.H $ I => H = I.By combining the above statements we get,F < G ≥ J > H = I.Conclusion I: F % J => F > J, does not follow.Conclusion II: I @ G => I < G, follows.Conclusion III: J % I => J > I, follows.Only II and III follow.