TISSNET 2014

Question 38

Find the odd one out: 

6, 12, 20, 26, 30

Solution

The logic here is

$$6=2\times3$$

$$12=3\times4$$

$$20=4\times5$$

$$30=5\times6$$

All numbers except 26 are product of consecutive numbers.

$$\therefore\ $$26 is the odd one among the given numbers.


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