Letter series

user December 8, 2023

(26) In the series E2G, I7J, M15L, ____, U32O, what comes next?

(a) Q24M
(b) Q25M
(c) Q31M
(d) Q30M

Correct Answer: (c) Q31M
The pattern in the series involves increasing the first letter by four steps in the alphabet (E to I to M, etc.), adding 5 to the number each time (2 to 7 to 15, etc.), and increasing the last letter by one position. So the next sequence should be Q31M.
\[ \text{If } L_1, N, L_2 \text{ are the first letter, number, and second letter respectively, then the pattern follows: } L_1 = L_1 + 4, N = N + 5, L_2 = L_2 + 1 \]

(27) If the series is H2K, M6N, R12P, ____, X20R, what should fill the blank?

(a) V17Q
(b) V18Q
(c) V18R
(d) V17R

Correct Answer: (c) V18R
This series follows a pattern where the first letter increases by five positions in the alphabet (H to M to R, etc.), the number is multiplied by 3 each time (2 to 6 to 12, etc.), and the last letter increases by one position. Therefore, the missing sequence is V18R.
\[ \text{With } L_1, N, L_2 \text{ as the first letter, number, and second letter respectively, the rule is: } L_1 = L_1 + 5, N = N \times 3, L_2 = L_2 + 1 \]

(28) In the series S3Q, O7N, L12K, ____, G22H, what comes next?

(a) C32F
(b) C33F
(c) D32F
(d) D33F

Correct Answer: (a) C32F
This series follows a pattern where the first letter decreases by four positions in the alphabet (S to O to L, etc.), adding 5 to the number each time (3 to 7 to 12, etc.), and decreasing the last letter by one position. So the next sequence should be C32F.
\[ \text{If } L_1, N, L_2 \text{ are the first letter, number, and second letter respectively, then the pattern follows: } L_1 = L_1 – 4, N = N + 5, L_2 = L_2 – 1 \]

(29) If the series is F2H, J6K, N12M, ____, T20P, what should fill the blank?

(a) R18N
(b) R18M
(c) R18L
(d) S18L

Correct Answer: (c) R18L
This series follows a pattern where the first letter increases by four positions in the alphabet (F to J to N, etc.), the number is multiplied by 2 each time (2 to 6 to 12, etc.), and the last letter decreases by one position. Therefore, the missing sequence is R18L.
\[ \text{With } L_1, N, L_2 \text{ as the first letter, number, and second letter respectively, the rule is: } L_1 = L_1 + 4, N = N \times 2, L_2 = L_2 – 1 \]

(30) In the series A2C, E6F, I12H, ____, Q20J, what comes next?

(a) M16K
(b) M16I
(c) M16H
(d) M16G

Correct Answer: (c) M16H
The pattern in the series involves increasing the first letter by four steps in the alphabet (A to E to I, etc.), adding 4 to the number each time (2 to 6 to 12, etc.), and increasing the last letter by one position. So the next sequence should be M16H.
\[ \text{If } L_1, N, L_2 \text{ are the first letter, number, and second letter respectively, then the pattern follows: } L_1 = L_1 + 4, N = N + 4, L_2 = L_2 + 1 \]

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