Test Index

Number series coding and Decoding and odd man out

Question : 49 of 51

Marks: +1, -0

5,7,11, ?, 35,67

Solution:

Concept:

The series follows a pattern where each term is obtained by adding successive powers of 2 starting from

2^1

Explanation:

Difference between

7

and

5

2 = 2^1

Difference between

11

and

7

4 = 2^2

Next difference should be

2^3 = 8

, so the missing term is

11 + 8 = 19

Check:

19 + 16 = 35

(since

2^4 = 16

), and

35 + 32 = 67

(since

2^5 = 32

The pattern holds.

Answer:

The missing term is

19

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