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Reasoning Aptitude

MISSING NUMBER FINDING MCQs

Total Questions : 271 | Page 4 of 28 pages
Question 31. Find the missing number?
  1.    89
  2.    96
  3.    104
  4.    91
 Discuss Question
Answer: Option B. -> 96
Moving from left to right, numbers follow the sequence of square numbers, from 6 to 10, subtracting 4 each time. So,
Missing Element = 10 * 10 - 4 = 96.
Question 32. Find the missing number?
  1.    13
  2.    19
  3.    9
  4.    21
 Discuss Question
Answer: Option A. -> 13
In each star, the central value equals the sum of the upper and lower digits on each star, subtracting the sum of the left and right hand digits. So,
Missing Number = 9 + 7 + 6 - 5 - 4 = 13.
Question 33. Find the missing number?
  1.    1
  2.    11
  3.    6
  4.    7
 Discuss Question
Answer: Option C. -> 6
In each circle, double the numbers on the left hand side and put the result in the opposite segment on the right hand side. So,
x * 2 = 12.
x = 6.
Question 34. Find the missing number?
  1.    4
  2.    5
  3.    3
  4.    6
 Discuss Question
Answer: Option C. -> 3
Reading each column as a 3 digit number, moving from left to right, the columns follow the sequence of cube numbers of 5, 6 and 7.
Last column Number = 7 * 7 * 7 = 343.
So, Missing Number = 3.
Question 35. Find the missing number?
  1.    9
  2.    1
  3.    7
  4.    13
 Discuss Question
Answer: Option A. -> 9
Reading each pair of numbers in a row as a 2 digit number, values increase by 6 each time. Thus,
Bottom element = 53 + 6 = 59.
Required Missing element = 9.
Question 36. Find the missing number.
  1.    18
  2.    20
  3.    16
  4.    12
 Discuss Question
Answer: Option D. -> 12
Logic (Row-wise):
(First Element / Second element) * 2 = Third Element.
So,
(108/x) * 2 = 18
x = 12.
Missing Number = 12.
Question 37. Find the missing number?
  1.    40
  2.    83
  3.    62
  4.    16
 Discuss Question
Answer: Option B. -> 83
First row : 12 /4 = 21 /7.
Second row : 10 /5 = 4 /2.
Third row : 64 /8 = 24 /3.
So, required missing character = (83).
Question 38. Find the missing number.
  1.    5
  2.    21
  3.    9
  4.    10
 Discuss Question
Answer: Option A. -> 5
Second Row, 2*9 + 3*17 = 69.
Third Row, 2*13 + 3*11 = 59.
Let missing number be x,
2x + 3*13 = 49.
or, x = 5.
Question 39. Find the missing character?
  1.    88
  2.    96
  3.    238
  4.    500
 Discuss Question
Answer: Option A. -> 88
First row → (263 -188) *4 = 300.
Thus, Second Row → (915 -893) *4 = 22 *4 = 88.
Question 40. Find the missing character?
  1.    19
  2.    17
  3.    16
  4.    15
 Discuss Question
Answer: Option C. -> 16
First column => 112 - 12 = 120.
Second Column => 72 - 22 = 45.
Third column => 52 - 32 = 16

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