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: 10 years
Explanation Let the present age is = x Lubna age = x + 15 Father age = x + 40 x + 40 = 6(x+15) x + 40 = 6x + 90 5x = 50 x = 10 years
Answer: 18
Explanation
Answer: 64
Explanation The pattern of the series is: 1³ = 1, 2² = 4, 2³ = 8, 3² = 9, 3³ = 27 Following this pattern: 4² = 16 (skipped), 4³ = 64 So, the next number in the series is 64 .
Answer: 1200
Explanation Let suppose original price = x 25% of x 25% X x x- 25%x = 900 x - 25/100 x = 900 100x - 25x = 90000 75x = 90000 x=1200
Answer: 8
Explanation We see that 32 + 8 = 40 and 32 – 8 = 24. Now let us check this rule for one more term. We see that 16 + 8 = 24. Therefore this works for more than half of the given numbers. Hence the rule is correct. Therefore the missing number in the series is 16 – 8 = 8. The answer is 8 .
Answer: W
Explanation The next letter in the sequence c, e, h, l, q is W. The series follows an increasing pattern of alphabetical gaps, where the number of letters skipped increases by one for each step (+2,+3,+4,+5,+6): C + 2 = E E + 3 = H H + 4 = L L + 5 = Q Q + 6 = W (17th letter + 6 = 23rd letter, which is W).
Answer: 20
Explanation The pattern shows an increase of 2 in each number. After 18 , the next number is 20 .
Answer: 22
Explanation The sequence is formed by increasing differences: +5 (from 1 to 6), +7 (from 6 to 13), and if the pattern continues with differences increasing by 2 each time, the next difference should be +9. Let's calculate the value of k: 1 + 5 = 6 6 + 7 = 13 13 + 9 = 22 So, the sequence would be 1, 6, 13, 22 , 33, 46. Therefore, the value of k is 22 .
Answer: 11
Explanation The sequence increases by +2 each time: 1 → 3 → 5 → 7 → 9 → 11
Answer: 8
Explanation The given series is: 2, 4, 3, 6, 4, ? Let’s split the pattern into two alternating sequences: - 1st, 3rd, 5th terms: 2, 3, 4 → increasing by 1 - 2nd, 4th, 6th terms: 4, 6, ? → increasing by 2 So, the 6th term = 6 + 2 = 8
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