Question

13, 27, 53, 107, 213, ____​

Answer 1

Step-by-step explanation:

13×2+1=27

27×2-1=53

53×2+1=107

107×2-1=213

213×2+1=427

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Answer 2

The missing term is 427.

• A number series is an orderly collection of numbers, some of which are incorrectly positioned within the series and others of which are absent.
• Candidates must observe and determine the precise number to the series of numbers based on adding and subtracting the numbers.
• Candidates should thoroughly study the question before proceeding. Sometimes a candidate can solve a question simply by carefully reading the question.
• Candidates occasionally struggle to understand the pattern of the number series. Candidates should attempt to determine the series' trend while preparing for bank exams by examining the pattern of the series. They can locate it by examining the series to see if it is decreasing, growing, or using a different pattern.

Here, the given series is, 13, 27, 53, 107, 213, ?

Now, the first term is 13.

Now, multiplying 2 to 13 and then adding 1, we get,

$13.2+1 = 27$, which is the second term.

Similarly, we get,

Multiplying 2 to 27 and then subtracting 1, we get,

$27.2-1 = 53$.

Then,

$53.2+ 1 = 107.\\107.2-1 = 213.\\213.2+1 = 427.$

Hence, the missing term is 427.

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