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Number series coding and Decoding and odd man out

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Question : 15 of 51

Marks: +1, -0

6,9,15,21,24,26,30

9
26
24
30

Solution:

Concept:

Identify the number that does not follow the common property of being a multiple of 3.

Explanation:

The series is

6,9,15,21,24,26,30

.

Check divisibility by 3:

6

,

9

,

15

,

21

,

24

, and

30

are all multiples of

3

.

26

is not a multiple of

3

.

Thus,

26

is the odd one out.

Answer:

26

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