In each number except 383, the product of first and third digit is the middle one.
The pattern is x2 + 1, where x = 1, 2, 3, 4, 5, 6, 7, 8 etc. But 64 is out of pattern
Multiply each term by 3 to obtain the next term. Hence, 30 is a wrong number.
Go on multiplying with 1, 2, 3, 4, 5, 6 to get the next number. So, 96 is wrong.
Go on dividing by 4 to get the next number. So, 200 is wrong.
Go on multiplying 2 and adding 1 to get the next number. So, 39 is wrong.
Add 12, 22, 32, 42, 52,62 .
So, 91 is wrong.
The number are square of odd natural numbers, starting from 5 up to 15. So, 36 is wrong.
The number are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13 . So, 150 is wrong.
The difference between two successive terms from the beginning are 7, 5, 7, 5, 7, 5. So, 40 is wrong.
The terms are successively divided by 12, 10, 8, 6 .... etc. So, 24 is wrong.
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