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: 13
Explanation Let's look at the pattern in the sequence: 23, 5, 63, 9, 73, ? Break it into two alternating sequences: - 1st, 3rd, 5th terms (odd positions): 23, 63, 73 - 2nd, 4th, 6th terms (even positions): 5, 9, ? Odd positions: 23 → 63 → 73 → +40 → +10 Even positions: 5 → 9 → ? → +4 → ? If the pattern of +4 continues: 9 + 4 = 13
Answer: 15,-27
Explanation
Answer: B
Explanation Step-by-step explanation: A < B A > C and D C and D < A < B so B is the tallest ***** ND04-12-2022 ND23-6-2023
Answer: 45
Explanation If 10 people meet and shakes hand with each other. First person will shakes hand with other 9, second person had already shakes hand with 1st person and shakes hand with other 8, So, the total no. of handshakes= 9+8+7+6+5+4+3+2+1=45 Shakes The other way to calculate this is by the formula n(n+1)/2 where n is the no. of shake hands by very first person and that is 9. So, the total no. of handshakes=9(9+1)/2 = 9(10)/2 =90/2 =45
Answer: 4.5
Explanation Median of 5, 9, 3, 1, 4, 6: Arrange: 1, 3, 4, 5, 6, 9 Median = average of middle two = (4 + 5)/2 = 4.5
Answer: 225
Explanation These are all perfect squares: - 121 = 11² - 144 = 12² - 169 = 13² - 196 = 14² Next number should be: - 15² = 225
Answer: 220
Explanation The series is divided by 2 to get the next term, so: 240 ÷ 2 = 120 120 ÷ 2 = 40 40 ÷ 2 = 10 10 ÷ 2 = 2 And preceding the 240, we have: 440 ÷ 2 = 220 So, the correct sequence is: 220, 240, 120, 40, 10, 2.
Answer: 299
Explanation The given sequence is: -31, -21, -11, -1, 9 Let's find the common difference (d): d = (-21) - (-31) = 10 d = (-11) - (-21) = 10 d = (-1) - (-11) = 10 d = 9 - (-1) = 10 The sequence is an arithmetic progression (AP) with a common difference of 10. The nth term of an AP is given by: an = a + (n - 1)d where a is the first term (-31), n is the term number (34), and d is the common difference (10). a34 = -31 + (34 - 1) * 10 = -31 + 33 * 10 = -31 + 330 = 299
Answer: 18
Explanation Given series: 32, 6, 43, 12, 64, ? Let’s separate the odd and even positioned numbers: Odd positions (1st, 3rd, 5th...): 32, 43, 64 → Increases by 11 and 21 - 32 → 43 (+11) - 43 → 64 (+21) - Expected next increase: +31 → 64 + 31 = 95 Even positions (2nd, 4th...): 6, 12 → Increases by 6 - 6 → 12 (+6) - Next: 12 + 6 = 18 So complete sequence becomes: 32, 6, 43, 12, 64, 18, 95...
Answer: 22
Explanation The pattern of the series is: +1, +2, +3, +4, +5... So, the next difference should be +6: 16 + 6 = 22 The correct answer is 22 .
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