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.
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Answer: 14 and 13
Explanation The sequence alternates between adding 3 and subtracting 1. Following this pattern: 7 (+3) → 10 (-1) → 9 (+3) → 12 (-1) → 11 (+3) → 14 (-1) → 13.
Answer: 30
Explanation Looking at the differences between consecutive terms: 15 - 11 = 4 17 - 15 = 2 24 - 17 = 7 Now, let's continue the pattern: The difference between 24 and the next term should be 6 (following the alternating pattern of 4, 2, 7, 6...). So, 24 + 6 = 30 . Let's check the next differences: 65 - 30 = 35 101 - 65 = 36 Thus, the complete series is : 11, 15, 17, 24, 30, 65, 101 .
Answer: S10
Explanation Letter pattern Split into three blocks of three: Block 1 Z → X → V (Reverse alphabet, –2) Block 2 A → C → S (Forward jump from start of alphabet to 19th letter to balance reverse blocks) Block 3 T → R → P (Reverse alphabet, –2) So the missing letter = S Number pattern Again split into blocks: Block 1 4, 3, 9 → 4 × 3 = 12, digits reversed → 9 Block 3 5, 4, 15 → 5 × 4 = 20, subtract 5 → 15 Block 2 6, 2, ? → 6 × 2 = 12 So missing number = 10 (after pattern adjustment used in other blocks) Final Answer (c) S10
Answer: 700
Explanation 35×100÷5 = 700 5÷100× x= 35 5x÷100=35 5x=3500 x=3500÷5 x=700 AGM 07.5.23
Answer: 34
Explanation 28 + 5 = 33 33 - 2 = 31 31 + 5 = 36 36 - 2 = 34 34 + 5 = 39 Last verified on 02-04-2026
Answer: 12
Explanation Series: 6, 3, 12, 6, 24, ___ Step 1: Find a pattern 6 → 3 (÷2) 3 → 12 (×4) 12 → 6 (÷2) 6 → 24 (×4) So the pattern alternates: ÷2, ×4, ÷2, ×4, ... Step 2: Next term 24 ÷ 2 = 12 Last updated by NA on 25-April-2026
Answer: 5
Explanation 1, 4, 2, 5, 3, 6, 4, 7, ? Now, separate into two alternating patterns: - 1, 2, 3, 4, ? → increasing by 1 → next is 5 - 4, 5, 6, 7 → also increasing by 1 → next would be 8 So, the pattern is: (1,4), (2,5), (3,6), (4,7), (5,8)
Answer: 65536
Explanation The series is obtained by multiplying the previous term by 4: 4 × 4 = 16 16 × 16 = 256 256 × 256 = 65536
Answer: 17
Explanation Let the first num=x second number will be=x+2 third num will be =x+4 Given condition x+x+2+x+4=51 3x+6=51 3x=51-6 3x=45 x=45/3=15 first number=15 2nd number=15+2=17 3rd number=17+2=19
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