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Reasoning Aptitude

NUMBER SERIES COMPLETION MCQs

Total Questions : 501 | Page 45 of 51 pages
Question 441. Find out the wrong term: 4, 10, 22, 46, 96, 190, 382
  1.    4
  2.    10
  3.    96
  4.    382
 Discuss Question
Answer: Option C. -> 96
The correct pattern is + 6, + 12, + 24, + 48, + 96, + 192 ............
So, 96 is wrong and must be replaced by (46 + 48) i.e., 94
Question 442. Find the missing term :- 2, 3, 3, 5, 10, 13, ?, 43, 172, 177
  1.    23
  2.    38
  3.    39
  4.    40
 Discuss Question
Answer: Option C. -> 39
The pattern is + 1, × 1, + 2, × 2, + 3, × 3, + 4, × 4, + 5 So, missing term = 13 × 3 = 39
Question 443. Find the missing term :- 1, 9, 25, 49, 81, ?
  1.    100
  2.    112
  3.    121
  4.    144
 Discuss Question
Answer: Option C. -> 121
The series consists of squares of consecutive odd numbers i.e., 12 , 32 , 52 , 72 , 92 ,..............So, missing term = 112 = 121
Question 444. Find the missing term, 4, 9, 25, ?, 121, 169, 289, 361
  1.    49
  2.    64
  3.    81
  4.    87
 Discuss Question
Answer: Option A. -> 49
The given series consists of squares of consecutive prime numbers i.e., 22 , 32 , 52 ,.....................,112 , 132 , 172 , 192 So, missing term = 72 = 49
Question 445. Find the missing term: 563, 647, 479, 815, ?
  1.    672
  2.    386
  3.    279
  4.    143
 Discuss Question
Answer: Option D. -> 143
The pattern is + 84, - 168, + 336, .....i.e., + 84, - (84 × 2), + (84 × 22 ),.................So, missing term = 815 - (84 × 23 ) = 815 - 672 = 143
Question 446. Find the missing term :- 240, ?, 120, 40, 10, 2
  1.    180
  2.    240
  3.    420
  4.    480
 Discuss Question
Answer: Option B. -> 240
The pattern is ÷ 1, ÷ 2, ÷ 3, ÷ 4, ÷ 5 So, missing term = 240 ÷ 1 = 240
Question 447. Find the missing term: 5, 2, 7, 9, 16, 25, ?
  1.    41
  2.    45
  3.    48
  4.    52
 Discuss Question
Answer: Option A. -> 41
Each term in the series, except the first two terms, is the sum of the preceding two terms.So, missing term = 16 + 25 = 41
Question 448. Find the missing term: 2, 8, 16, 128, ?
  1.    2042
  2.    2046
  3.    2048
  4.    2056
 Discuss Question
Answer: Option C. -> 2048
Each term in the series, except the first two terms, is the product of the preceding two terms.So, missing term = 16 × 128 = 2048
Question 449. Find the missing term: 4, 12, 36, 108, ?
  1.    144
  2.    216
  3.    304
  4.    324
 Discuss Question
Answer: Option D. -> 324
The pattern is × 3 So, missing term = 108 × 3 = 324
Question 450. Find the missing term: 10, 14, 26, 42, 70, ?
  1.    100
  2.    102
  3.    106
  4.    114
 Discuss Question
Answer: Option D. -> 114
Each term in the series, except the first two terms, is 2 more than the sum of the preceding two terms.So, missing term = (42 + 70) +2 = 114

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