(1) A, C, E, G, I, ?
(2) B, D, F, H, J, ?
(3) Z, X, V, T, R, ?
(4) A, D, G, J, M, ?
(5) P, Q, R, S, T, ?
(6) A, E, I, M, Q, ?
(7) M, N, P, Q, S, ?
(8) C, F, I, L, O, ?
(9) Z, W, T, Q, N, ?
(10) A, B, D, G, K, ?
(11) B, F, J, N, R, ?
(12) A, Z, X, W, V, ?
(13) A, C, F, J, O, ?
(14) Z, V, R, N, J, ?
(15) A, C, G, K, O, ?
(16) A, E, I, M, Q, ?
(17) C, H, O, T, Y, ?
(18) B, C, E, G, I, ?
(19) F, G, I, L, O, ?
(20) L, N, P, R, T, ?
(21) A, B, D, F, H, ?
(22) D, F, I, L, O, ?
(23) S, T, U, V, W, ?
(24) A, Z, Y, X, W, ?
(25) M, P, S, V, ?
Answer
(1) A, C, E, G, I, ?
Answer: K
Explanation: The pattern is alternating every 2nd letter of the alphabet: A, C, E, G, I, (skip J, K).
(2) B, D, F, H, J, ?
Answer: L
Explanation: The pattern is increasing by 2 each time: B, D, F, H, J, (skip K, L).
(3) Z, X, V, T, R, ?
Answer: P
Explanation: The pattern is decreasing by 2 each time: Z, X, V, T, R, (skip Q, P).
(4) A, D, G, J, M, ?
Answer: P
Explanation: The pattern is increasing by 3 each time: A (1), D (4), G (7), J (10), M (13), (16) P.
(5) P, Q, R, S, T, ?
Answer: U
Explanation: The pattern is consecutive letters: P, Q, R, S, T, (U).
(6) A, E, I, M, Q, ?
Answer: U
Explanation: The pattern is increasing by 4 each time: A, E, I, M, Q, (U).
(7) M, N, P, Q, S, ?
Answer: T
Explanation: The pattern alternates between increasing by 1 and 2: M (1), N (1), P (2), Q (1), S (2), (T).
(8) C, F, I, L, O, ?
Answer: R
Explanation: The pattern increases by 3 each time: C, F, I, L, O, (R).
(9) Z, W, T, Q, N, ?
Answer: K
Explanation: The pattern decreases by 3 each time: Z, W, T, Q, N, (K).
(10) A, B, D, G, K, ?
Answer: O
Explanation: The pattern increases by 1, 2, 3, 4, …: A (1), B (1), D (2), G (3), K (4), (O – 5).
(11) B, F, J, N, R, ?
Answer: V
Explanation: The pattern increases by 4, 4, 4, 4, …: B (2), F (6), J (10), N (14), R (18), (V – 22).
(12) A, Z, X, W, V, ?
Answer: U
Explanation: The pattern alternates between moving forward and backward: A, Z, X, W, V, (U).
(13) A, C, F, J, O, ?
Answer: U
Explanation: The pattern increases by 1, 2, 3, 4, …: A (1), C (3), F (6), J (10), O (15), (U – 21).
(14) Z, V, R, N, J, ?
Answer: F
Explanation: The pattern decreases by 4 each time: Z, V, R, N, J, (F).
(15) A, C, G, K, O, ?
Answer: S
Explanation: The pattern increases by 2, 4, 6, 8, …: A (1), C (3), G (7), K (11), O (15), (S – 19).
(16) A, E, I, M, Q, ?
Answer: U
Explanation: The pattern increases by 4 each time: A, E, I, M, Q, (U).
(17) C, H, O, T, Y, ?
Answer: D
Explanation: The pattern increases by 5, 7, 9, 11, …: C (3), H (8), O (15), T (20), Y (25), (D – 30).
(18) B, C, E, G, I, ?
Answer: K
Explanation: The pattern increases by 1, 2, 2, 2, …: B (2), C (3), E (5), G (7), I (9), (K – 11).
(19) F, G, I, L, O, ?
Answer: R
Explanation: The pattern increases by 1, 2, 3, 4, …: F (6), G (7), I (9), L (12), O (15), (R – 18).
(20) L, N, P, R, T, ?
Answer: V
Explanation: The pattern increases by 2 each time: L (12), N (14), P (16), R (18), T (20), (V – 22).
(21) A, B, D, F, H, ?
Answer: J
Explanation: The pattern increases by 1, 2, 2, 2, …: A (1), B (2), D (4), F (6), H (8), (J – 10).
(22) D, F, I, L, O, ?
Answer: T
Explanation: The pattern increases by 2, 3, 4, 5, …: D (4), F (6), I (9), L (12), O (15), (T – 20).
(23) S, T, U, V, W, ?
Answer: X
Explanation: The pattern is consecutive letters: S, T, U, V, W, (X).
(24) A, Z, Y, X, W, ?
Answer: V
Explanation: The pattern decreases by 1 letter each time: A, Z, Y, X, W, (V).
(25) M, P, S, V, ?
Answer: X
Explanation: The pattern increases by 3 each time: M (13), P (16), S (19), V (22), (X – 24).