Number Series 311) Find the missing numbers in the series, 4, 20, 7, 14, 10, 8, 13, _, _.
Answer: C Explanation: This is an alternating addition and subtraction series in which 3 is added to each number in the first pattern and 6 is subtracted from each number in the second pattern. Therefore, the next two numbers are 2 (86) and 16 (13+3). 12) Find the wrong number in the series, 2, 6, 15, 31, 56, 93.
Answer: A Explanation: In this series, the difference between the two consecutive numbers is 4, 9, 16, 25, and 37 (2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2}). So, after 25 there should be 36, not 37, and after 56 there should be 92 (56+36) not 93. 13) 12 12, 24 24, 36 36, 48, _, _?
Answer: B Explanation: In this series, each number repeats itself then increases by 12, so the next two numbers are 48 and 60 (48+12). 14) Find the next two numbers in the series, 52, 50, 48, 44, 42, 40, 36 _, _
Answer: B Explanation: This is an alternating subtraction series; 2 is subtracted twice, then 4 is subtracted once and so on. Therefore, the next two numbers are 34 and 32. 15) Find the next two numbers in the series 5, 12, 15, 22, 25, 32, _, _.
Answer: A Explanation: This is an alternating addition series that adds 7 then 3 and so on. Number Series 1 Number Series 2 Number Series 4
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