Series

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๐Ÿ“˜ Comprehensive Syllabus & Examination Guide

Series

Official curriculum roadmap, subject/topic distribution, negative marking rules, pacing guidelines, and solved sample questions.

๐ŸŽฏ Mapped Subjects & Topic Question Distribution

Total Question Pool 100%
21 MCQs
Combined Active Syllabus
Series
21 MCQs
Topic Pool
๐Ÿ“Š Question Pool Structure
21 MCQs across fundamental, intermediate, and advanced concept tiers.
โšก Recommended Pacing
45 to 60 seconds per MCQ. Flag complex problems and preserve 10 minutes for final revision.
โš–๏ธ Scoring & Negative Marking
+1 mark per correct answer. In competitive tests with negative marking, -0.25 applies for incorrect guesses.

๐Ÿ’ก Strategic Preparation & Exam Hall Guidelines

To maximize your score on Series, candidates are advised to follow a structured three-pass approach. In the First Pass, solve all direct recall and formula-based questions within 30 seconds each to secure foundational marks. In the Second Pass, tackle multi-step analytical and quantitative reasoning problems. In the Third Pass, review marked questions and verify calculations.

Practice with the interactive player below to evaluate your speed and accuracy under real exam pressure. Every question features full mathematical formulas, step-by-step worked solutions, and conceptual explanations vetted by Apex Rankers Academy subject matter specialists.

Ready to test your knowledge? Launch interactive 1-by-1 practice with instant feedback, bookmarking, and step-by-step rationales.
Solved Blueprint Examples

๐Ÿ“ Pre-Rendered Solved Sample Questions & Detailed Solutions

Showing 10 solved representative questions

Review the solved problems below to understand question phrasing, answer choices, and step-by-step solution logic prior to starting the full interactive practice drill:

Sample Question 1
Series Hard • Intelligence Tests
Series: Aoz, Boy, Cox, Dow, โ€”โ€”
A Goy
B Dox
C Eou
D Eov
โœ“ Correct Answer: D - Eov
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
First letters: A-B-C-D-E. Second: o-o-o-o-o. Third: z-y-x-w-v. Result: Eov.
Sample Question 2
Series Hard • Intelligence Tests
Series: 27, 5, 25, 8, 23, 11, 21, โ€”โ€”
A 15, 21
B 14, 19
C 16, 23
D 12, 19
โœ“ Correct Answer: B - 14, 19
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
Two alternating series: 27-25-23-21 (-2) and 5-8-11 (+3). Next terms: 19 and 14.
Sample Question 3
Series Hard • Intelligence Tests
ABCD ;DCBA;WXYZ;?
A XZYW
B YZYW
C ZYXW
D WXYZ
โœ“ Correct Answer: C - ZYXW
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
The second set is the reverse alphabetical order of the first; W-X-Y-Z reversed is Z-Y-X-W.
Sample Question 4
Series Hard • Intelligence Tests
AZ CX EV------?
A UB
B GT
C DW
D EV
โœ“ Correct Answer: B - GT
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
This is a sequence of pairs from opposite ends of the alphabet (A-Z, C-X, E-V); the next odd letter is G (7th), paired with T (20th).
Sample Question 5
Series Hard • Intelligence Tests
ACE BDF CEG---?
A DEM
B CED
C CED
D DFH
โœ“ Correct Answer: D - DFH
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
Each group shifts forward: A-C-E (+1 shift) -> B-D-F -> C-E-G -> D-F-H.
Sample Question 6
Series Hard • Intelligence Tests
Complete the series: AACBBBDCCCE -----, -----,
A EE
B ED
C DE
D DD
โœ“ Correct Answer: D - DD
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
The series intersperses a single letter (C, D, E) between growing groups of duplicated letters (AA, BBB, CCCC, DDDDD).
Sample Question 7
Series Hard • Intelligence Tests
In the series 67, 57, 52, 42, 37, 27, 22, X, Y. (c) Both statements at A and D are correct
โœ“ Correct Answer: (c)
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
Pattern: -10, -5, -10... result is X=12, Y=7. Key validates choice (c) covering this result.
Sample Question 8
Series Hard • Intelligence Tests
In the series 45, 35, 30, 20, 15, P, Q. (X) Q is -5 (Y) P is +5
A Both are correct
B Y correct but X incorrect
C X is correct
D Statement Y is correct
โœ“ Correct Answer: D - Statement Y is correct
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
Pattern is -10, -5... P = 15โˆ’10=5; Q = 5โˆ’5=0. Thus Y is correct and X is wrong.
Sample Question 9
Series Hard • Intelligence Tests
W T P M I ?
A K
B P
C F
D I
โœ“ Correct Answer: C - F
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
Alphabet sequence skipping letters: W(-3)T(-4)P(-3)M(-4)I. Next skip is -3: F.
Sample Question 10
Series Hard • Intelligence Tests
A D G D H I H M ?
A C
B K
C L
D R
โœ“ Correct Answer: C - L
๐Ÿ“– Step-by-Step Solution & Conceptual Rationale:
This sequence is broken down into overlapping groups of three letters (triplets). Each new triplet begins with the last letter of the previous one:
Group 1: A, D, G
Group 2: D, H, I
Group 3: H, M, ?

If we look at how the alphabet numerical positions (A=1, B=2, etc.) change across each corresponding spot in the triplets, a clear mathematical pattern emerges:
1st letter of each group: A (1) โ†’ D (4) โ†’ H (8) (Increases by +3, then +4)
2nd letter of each group: D (4) โ†’ H (8) โ†’ M (13) (Increases by +4, then +5)
3rd letter of each group: G (7) โ†’ I (9) โ†’ ? (Following the progression, it must increase by +2, then +3)

Adding 3 to the position of I (9) gives us 12, which corresponds to the letter L.
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