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: 25
Explanation The given series is a square of natural number (1)^2 = 1 (2)^2 = 4 (3)^2 =9 (4)^2 = 16 (5)^2 = 25
Answer: 80
Explanation 5 × 2 = 10 10 × 2 = 20 20 × 2 = 40 40 × 2 = 80 Last updated 11-03-2026
Answer: 37, 41
Explanation Sequence: 18, 21, 25, 18, 29, 33, 18, ?, ? Notice 18 repeats every 3rd number: positions 1, 4, 7 → next 18 should appear at position 10. Look at the numbers between 18s: 21 → 25 → difference = +4 29 → 33 → difference = +4 So the pattern between 18s is: start number, +4 → next number, then 18 appears. Applying this to the next numbers after 18 (position 7): 18 → next = 37 (since previous +4 pattern continued) next after 37 = 41 Sequence becomes: 18, 21, 25, 18, 29, 33, 18, 37, 41 , 18
Answer: 250
Explanation complete series from 100 to 390 100 110 120 130 140 150 160 170 180 190. 200 210 220 230 240 250 260 270 280 290. 300 310 320 330 340 350 360 370 380 390. ** ND4-12-2022
Answer: 48
Explanation The 5th term of the given geometric progression (G.P.) is 48. The sequence is 3, 6, 12, ... The common ratio is 2 (6/3 = 2, 12/6 = 2). Using the formula for the nth term of a G.P., a_n = a * r^(n-1), where a is the first term and r is the common ratio, the 5th term (a_5) is 3 * 2^(5-1) = 3 * 2^4 = 3 * 16 = 48.
Answer: 89
Explanation 1+2 = 3 3x2 = 6 +2 = 8 8x2 = 16 +3 = 19 19x2 = 38+ 4 = 42 42x2 = 84 +5 = 89
Answer: 81
Explanation 6 (+5)→ 11 11 (+10)→ 21 21 (+15)→ 36 36 (+20)→ 56 56 (+25) → 81
Answer: 84
Explanation Add 2, then multiply by 2 → 7+2=9 9×2=18 18+2=20 20×2=40 40+2=42 42× 2=84
Answer: 268
Explanation Sheep raised by Ali= 127 Sheep raised by Ahmed= 141 Sheep raised by both = 127 + 141 = 268
Answer: 112
Explanation To complete the sequence, we need to identify the pattern: The given sequence is: __, 56, 28, 14, 7 Observing the sequence, each number is half of the previous one: 56 ÷ 2 = 28 28 ÷ 2 = 14 14 ÷ 2 = 7 So, to find the number before 56, we double 56: 56 × 2 = 112 Therefore, the complete sequence is: 112, 56, 28, 14, 7
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