Find the wrong term in the given series.
$2, 5, 11, 20, 30, 47, 65$ .

5

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20

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30

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47

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Solution

The correct option is A $30$
The difference between the consecutive number is in the multiples of $3$
i.e.
$2, 2 + 3 = 5, 5 + 6 = 11, 11 + 9 = 20, 20 + 12 = 32, 32 + 15 = 47, 47 + 18 = 65$
Therefore, the wrong term is $30$ and should be replaced by $32$
Answer is Option C

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