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: E
Explanation We know that in a dictionary, words are arranged in alphabetical order. First, we will arrange the letters of the word MOTHER in alphabetical order Thus, we get E, H, O, M, R, and T. Now, we know that the words starting with E will appear first in the dictionary. Let us fix letter E as the first letter of the word.
Answer: 59
Explanation Let's look at the pattern: - 6 → 13: +7 - 13 → 28: +15 - 28 → ? Check the difference pattern: +7, +15 Seems to be doubling and adding 1: 7 → 15 → next would be 31 So: 28 + 31 = 59
Answer: 6
Explanation Looking at the alternating pattern: First sequence: 1, 2, 3 (Increasing) Second sequence: 3, ?, 7 Checking possible middle value: The pattern could follow a doubling sequence : 3 times 2 = 6 3 × 2 = 6
Answer: 185
Explanation 3 × 3 = 9 - 1 = 8 8 × 3 = 24 - 2 = 22 22 × 3 = 66 - 3 = 63 63 × 3 = 189 - 4 = 189
Answer: STUVWX
Explanation Start letters: A(1), D(4), H(8), M(13) — increments +3, +4, +5 → next +6 → 19 = S. Lengths grow 2,3,4,5 → next length 6 → letters S T U V W X → STUVWX .
Answer: 2550
Explanation This is an arithmetic sequence with first term a = 2, last term l = 100, and common difference d = 2. Step 1: Find the number of terms (n) The nth term of an arithmetic sequence is given by: l = a + (n - 1)d 100 = 2 + (n - 1)2 100 = 2 + 2n - 2 100 = 2n n = 50 Step 2: Calculate the sum of the sequence Sum = n/2 * (a + l) = 50/2 * (2 + 100) = 25 * 102 = 2550
Answer: Suffers a loss of 1%
Explanation In this type of problem always loss occurs. Use Formula, % Final Loss = (%loss * %gain)/100 = (10 *10)/100 = 1% loss. Net Graphic Change Method: 100 ==10% profit ==> 110 == 10% loss ==> 99. 100 become 99, so 1% of loss occurs .
Answer: 5’s table
Explanation 5 × 3 = 15, which is a part of the 5’s table : 5, 10, 15, 20 …
Answer: 13
Explanation Given sequence: 4, 11, 7, 14, 10, 17, __, 20 Two alternating series are used: First series: 4 → 7 → 10 → 13 ( +3 each time ) Second series: 11 → 14 → 17 → 20 ( +3 each time) Missing number: 13
Answer: 31
Explanation
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