Odd One Out (Number)

Add 15, 25, 35, 45, 55, 65 to successive terms to make the sequence.
Hence, there must be 18 + 25 = 43, in place of 38, in the given sequence.

The pattern is 1³, 2³, 3³, 4³, 5³, 6³, 7³. So, 124 is the incorrect term, as it should be 125.

There is a difference of prime numbers starting from 2. Hence, there must be 108 - 11 = 97 in place of 100 in the given sequence.

The pattern is cubes of prime numbers. Hence, all the numbers are correct.

1, 1 + 1² = 2, 2 + 2² = 6, 6 + 3² = 15, 15 + 4² = 31, 31 + 5² = 56, 56 + 6² = 92
Last number of the given series must be 92 instead of 91.

The pattern is made by adding 5, 8, 11, 14, 17, 20 successively.
So, the number 47 is wrong and must be replaced by 46.

There is difference of odd numbers (starting from 9).
So, 103 should be there in place of 102.

41 + 2 = 43
43 + 4 = 47
47 + 6 = 53
53 + 8 = 61
61 + 10 = 71
71 + 12 = 83

So, 73 should be replaced by 83. 

The pattern is 2³, 3³, 4³, 5³, 6³, 7³. But 100 is not a perfect cube. So, 100 should be replaced by 125.

Multiply each term by 3 to obtain the next term. Hence, 30 is the wong number.

The pattern is x 2 + 1 i.e 4 x 2 +1 = 9, 9 x 2 + 1 = 19 and so on.
So, it should be 79 x 2 + 1 = 159 in place of 160.

Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong. It should be 166.

In the above series, 23 is added and 17 is subtracted alternately from the terms. So, 634 is the wrong term.

All the numbers except 12 are prime numbers.

The difference between two consecutive terms is an odd number starting from 9. (9, 11, 13, 15, 17, 19)
So, 25 should be replaced by 26, in the sequence.

 In each term  except 427 sum of first and last digit is equal to the middle digit.

The difference between two consecutive numbers is a prime number in descending order, i.e. 19, 17, 13, 11, 7, 5. So, 88 should be replaced by 89. 

Each term of the series is the product of the preceding two terms.
So, 5000 is wrong and must be replaced by (50 x 500)  i.e 25000

There is a difference of 15 between two consecutive numbers. Hence, there should be 40 instead of 45 in the given sequence.

Except 21, all others are even numbers.

The pattern is 1², 2², 3², 4², 5², 6², 7². But instead of 5², there is 20 in the sequence. So, 20 is the wrong term.

In each term, except 383, the product of first and third digit is equal to the middle digit.

Each number except 279 is a multiple of 11.

Add 7 and 5 alternately. Hence, there should be 42 in place of 40 in the given sequence.

 Subtract 20, 25, 30, 35, 40, 45 from successive terms.
So, 0 is wrong, it should be -5.