SSC JE Mechanical Engineering 2015

Question 50

Pick the odd number from the sequence below :
2, 3, 6, 7, 11, 15, 30

Solution

In first number: The number is first added to same number.
In second number: The answer should added by 1.

1 + 1 = 2

2 + 1 = 3

3 + 3 = 6

6 + 1 = 7

7 + 7 = 14

14 + 1 = 15

15 + 15 = 30

So, 11 is odd number.

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