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

Logic:
In each square, multiply the top and bottom numbers together to give a 2 digit result, and put the letters with the numerical values of each digit in the left and right hand spaces.

Thus,
4 *X = BH = 28.
4X = 28.
X = 7.
Missing Number = 7.

In each star, calculate the difference between the 2 left hand and 2 right hand numbers.
The value at the top of each star equals the product of these differences, and the value at the bottom of each star equals the difference between these 2 differences.

So,
7 - 6 = 1 and
4 - 2 = 2.
Now,
2 * 1 = 2 (Top element in lower star).
And,
2 - 1 = 1 ( Lower element in Lower star).
Missing Element = 1.

Logic:
Difference of left hand Element * Difference of Right hand Element = Top Element.

So,
(8 - 2) * (5 - 4) = Missing Element
Missing Element = 6 * 1 = 6.

Logic (Row-wise, right to left):

First Row = Square of 11 = 121
Second row = Square of 12 = 144
Fourth Row = Square of 13 = 169
Fifth Row = Square of 14 = 196

So,
Sixth Row = Square of 15 = 225.
Thus, Missing number = 2

Logic:

Sum of the element in each row = 23.
First Row,
11 + 12 = 23

Second Row,
6 + 13 + 4 = 23

Third Row,
9 + 4 + 5 + 5 = 23

Fourth Row,
19 + 1 + 3 = 23

Fifth Row,
17 + x = 23
x = 23 - 17 = 6
Missing Element = 6.

Sum of the upper left element of all outer diagram - 5 = Lower left Element of the middle circle. I.e
3 + 0 + 5 + 9 - 5 = 12.

Sum of the upper right element of all outer diagram - 5 = Upper left Element of the middle circle. I.e.
1 + 1 + 2 + 5 - 5 = 4.

Sum of the lower left element of all outer diagram - 5 = Lower right Element of the middle circle. I.e
6 + 2 + 6 + 0 - 5 = X
X = 9.
Missing Number = 9.

Working from top to bottom, reading each pair of numbers as a 2 digit value, values represent the reverse alphabetical value of letters of the alphabet, starting with A, written with 3 straight lines only.

Left to Right
First Circle :
1 + 3 +2 + 1 + 0 + 5 = 12
Second Circle:
2 + 7 +0 + 1 + 4 + 1 = 15
Third Circle:
2 + 1 + 4 = 0 +7 + 4 = 18
Similarly, sum will follow the sequence,
12, 15, 18, 21, 24, 27.
So, In last Circle,
5 + 8 + 3 + x + 6 + 4 = 27
26 + x = 27
x = 1

Split the whole diagram in half, horizontally, to give two groups of 5 octagons. In each group, the central number in the top row equals the sum of the surrounding 4 numbers.

13 = 3 + 2 + 7 + 1

So,
14 = 6 + 3 + x + 1
x = 14 - 10 = 4.

Logic:
Next Number = 2 * previous number + 2

Thus,
Missing Number = 2 * 54 + 2 = 110.