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Missing Number Finding - General Inteligence & Reasoning MCQ Questions and Answers

Learn Missing Number Finding mcq questions and answers with easy and logical explanations - Missing Number Finding is part of competitive reasoning mcq questions. Page-8 section-1

Each section contains 100 MCQs on Missing Number Finding .
71
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option B
Solution:
Logic (Moving-Down):

7122 = 7 + 1 + 2 + 2 = 12.
6521 = 6 + 5 + 2 + 1 = 14.
8332 = 8 + 3 + 3 + 2 = 16.
4743 = 4 + 7 + 4 + 3 = 18.
9911 = 9 + 9 + 1 + 1 = 20.

So, sum of the last oval box = 22.
387x = 3 + 8 + 7 + x = 22.
x = 22 - 18 = 4.
Missing Element = 4.
72
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option D
Solution:
Logic:
Element in Lower left segment = Sum of the upper segment element
Element in Lower right Segment = Difference of the Upper segment element

Missing Number = 5 - 4 = 1.
73
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option A
Solution:
Working in rows, the sum of numbers in each row follows the sequence 5, 10, 15, 20, 15, 10, 5. So,

Sum of the middle = 20
1 + 3 + 7 + x + 1 + 4 + 2 = 20
x = 20 - 18 = 2.
Missing element = 2.
74
Find the missing number?
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Answer & Solution
Answer: Option C
Solution:
Working from left to right, the sum of the two smaller numbers on each triangle equals the third number. And the bigger number is rotating clockwise. So, in third triangle,

Missing Element,
x + 6 = 15.
x = 15 - 6 = 9.
75
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option B
Solution:
The number in the centre of each star equals the average of the surrounding 5 numbers. So,

Central number of last figure = ( 7 + 7 + 2 + 2 + 12)/5.
X * 5 = 30
X = 6.
76
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option D
Solution:
Logic:
Central Number = Multiplication of lower numbers + upper number

So,
Missing Number = 5 * 8 + 3 = 43.
77
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option A
Solution:
Numbers in the segments of the lower left circle equal the sum of the numbers in the upper left and central circles. Numbers in the segments of the lower right circle equal the sum of the numbers in corresponding segments of the upper right and central circles.
78
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option C
Solution:
The numbers on the points of the lower triangle equal the sum of the numbers on corresponding points of the upper two triangles. So,

Missing number = 6 + 4 = 10.
79
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option A
Solution:
72
72 - 3 = 69
69 - 5 = 64
64 - 7 = 57
57 - 9 = 48.
48 - 11 = 37

So, Missing Element = 37.
80
Find the missing number?
Missing Number Finding mcq question image
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Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board