Practise Series Completion MCQs in Maths. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Series Completion through multiple-choice questions in Maths. This subtopic contains 539 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these Series Completion MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
Continue your revision with related topics: 100 Most Repeated MCQs of Math MCQs, Algebra MCQs MCQs, Analogy MCQs MCQs, Average MCQs Math MCQs, Basic Math MCQs, Direction Sense MCQs MCQs, Geometry MCQs MCQs, IQ Past Papers MCQs MCQs.
Return to all Maths topics to choose your next area of study. Read the MCQ study guide to plan your revision, or try a Maths practice quiz.
Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.
Answer: 121
Explanation
Answer: 30
Explanation 6 → +7 → 13 13 → +8 → 21 21 → +9 → 30 30 → +16 → 46 Answer: 30
Answer: 56
Explanation Step 1: Find the pattern (differences) 6 − 2 = 4 12 − 6 = 6 20 − 12 = 8 30 − 20 = 10 42 − 30 = 12 The differences increase by 2 each time: 4, 6, 8, 10, 12, 14 Step 2: Find the next term Next number = 42 + 14 = 56
Answer: 11
Explanation If you are sixth in a sequence numbering from either end, that means there are 5 people in front of you and 5 people behind you. So, the total number of people in the queue is: 5 (in front of you) + 1 (you) + 5 (behind you) = 11 Therefore, the correct answer is: 11
Answer: 244
Explanation 298 → 294 (−4) - 294 → 285 (−9) - 285 → 269 (−16) Now, see the pattern in the differences: -4 (2²), -9 (3²), -16 (4²) Next should be: −25 (5²) So, 269 − 25 = 244
Answer: NI
Explanation ND26-9-2023
Answer: 26
Explanation Let's try to find the consistent difference between numbers: - 54 → 43 → difference = -11 - 43 → 34 → difference = -9 - 34 → 26 → difference = -8 - 26 → 22 → difference = -4 - 22 → 19 → difference = -3 - 19 → 18 → difference = -1 The differences are not follow a regular pattern. Now assume correct pattern: Try subtracting odd numbers in decreasing order: - 54 - 11 = 43 - 43 - 9 = 34 - 34 - 7 = 27 - 27 - 5 = 22 - 22 - 3 = 19 - 19 - 1 = 18 So if the intended pattern was subtracting odd numbers in sequence (11, 9, 7, 5, 3, 1): The correct sequence should be: 54, 43, 34, 27, 22, 19, 18 So the number 26 in the original sequence is wrong. It should have been 27 instead of 26. Correct wrong numbe r: 26 Correct sequence: 54, 43, 34, 27, 22, 19, 18
Answer: 14
Explanation This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2.
Answer: 137
Explanation The sequence follows a pattern of adding 7: 102 + 7 = 109 109 + 7 = 116 116 + 7 = 123 123 + 7 = 130 130 + 7 = 137 This is an arithmetic sequence with a common difference of 7.
Answer: 65,70
Explanation This is an alternating addition series, in which 10 is added, then 5, then 10, and so on.
Found a mistake? Use “Report correction” in the practice tool or contact us with the question and a supporting source.