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.
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Answer: 0.4
Explanation 0.4 is smaller than 0.45, 5, 0.5
Answer: 33
Explanation Series: 64, 48, 40, 36, 34, ? Now find the differences between consecutive terms: - 64 → 48: -16 - 48 → 40: -8 - 40 → 36: -4 - 36 → 34: -2 You can see the differences are decreasing: -16, -8, -4, -2... Next difference: -1 So, 34 - 1 = 33
Answer: 92
Explanation Let's examine the pattern of the given series: 2880, 480, 92, 24, 8, 4, 4. Start by checking the relationship between consecutive numbers: 2880 ÷ 6 = 480 480 ÷ 5 = 96 (but the next number is 92, so this is where the error occurs) 92 ÷ 4 = 24 24 ÷ 3 = 8 8 ÷ 2 = 4 4 ÷ 1 = 4 The wrong number is 92 . It should be 96 for the series to follow a decreasing division pattern.
Answer: 7, 4
Explanation T he pattern follows an alternating increase and decrease: 1 → 7 ( +6 ) 7 → 3 ( -4 ) 3 → 6 ( +3 ) 6 → 5 ( -1 ) 5 → 5 ( 0 ) Continuing the pattern: 5 → 7 ( +2 ) 7 → 4 ( -3 )
Answer: 36
Explanation The series consists of square numbers: 4 = 2^2 9 = 3^2 16 = 4^2 25 = 5^2 36 = 6^2
Answer: 5
Explanation Given string: 531875156352095351025871533501355325 We’re looking for “5 followed by 3” (i.e., "53") Let’s count all occurrences of "53" in the string: Scan the number: → 531875156352095351025871533501355325 Occurrences of "53": 1. 531 2. 535 3. 533 4. 535 5. 532 Total = 5
Answer: 12
Explanation Using the order of operations (BODMAS/PEMDAS): 3 + 3 × 3 Multiplication comes first: 3 × 3 = 9 3 times 3 = 9 3 × 3 = 9 Then addition: 3 + 9 = 12 3 + 9 = 12 3 + 9 = 12
Answer: 23
Explanation 2 + 1 = 3 3 + 2 = 5 5 + 3 = 8 8 + 4 = 12 12 + 5 = 17 17 + 6 = 23
Answer: 120-74
Explanation HCM of 120 is not 74 . There, B is the correct option HCF : Highest Common factor
Answer: 158
Explanation Given series: 25, 34, 52, 79, 114, ? Now check the differences between terms: - 34 − 25 = 9 - 52 − 34 = 18 - 79 − 52 = 27 - 114 − 79 = 35 Now look at the differences: 9, 18, 27, 35 → this isn’t a perfect pattern, but looks close to multiples of 9: - 9 × 1 = 9 - 9 × 2 = 18 - 9 × 3 = 27 - 9 × 4 = 36 → but actual is 35 (off by 1) So likely next difference = 9 × 5 = 45, or possibly 44 to maintain the pattern. 114 + 44 = 158
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