Find the missing number in the circle:

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answer is B.

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Detailed Solution

Concept- We must first determine the direction the numbers are travelling in the circle in order to determine the missing amount. Mathematical operations like multiplication, division, and subtraction are required in order to detect the pattern. In this instance, it is clear that the numbers are multiplied by two and then subtracted by subsequent natural numbers.
These are the numbers used in this pattern: 5,8,13,22,39.
The following numbers have a power of two difference:
The first two numbers are different in the following way:
5×2−2=8
8 2 3 = 13 is the difference between the second and third numbers.
1324=22 is the difference between the third and fourth numbers.
22 2 5 = 39 is the difference between the fourth and fifth digits.
3926=? is the difference between the fifth and sixth numbers.
As a result, 72 is supplied as the value of the question mark.
Hence, the correct option is 2.

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