Except (a) in all the other options, numbers are even numbers but in option (a) all numbers are prime numbers.
In all the options except (b), second and third numbers are the square and cube of first number but in option (a) all number respectively.
14 + 3 = 17 ? 17 + 6 = 23, 19 + 3 = 22 ? 22 + 6 28
17 + 3 =20 ? 20 + 6 = 26, 21 + 2 = 23 ? 23 + 7 30
Except option (c) in all the other options, all numbers are divisible by a particular number as option (a) by 7, option (b) by 8 and option (d) by 9.
9 - 2 = 7 ? 72 = 49
13 - 2 = 11 ? 112 = 121
10 - 2 = 8 ? 82 = 64 ? 61
7 - 2 = 5 ? 52 = 25
Only option (c) has difference if 7, rest have difference of 8 between first and second number.
In the other options except (d), second number is obtained by the addition of 1 in first number and third number is obtained by the addition of 10 in second number.
In all other groups of words, numeric component in between the first and second letters is the sum of positions of first and last letters in the alphabet.
In all other pair of letters, there is a gap of three letters as in the alphabet between the two letters.
In all other groups, there is a gap of one letter between first and second letters and gap of two letters between second and third letters.
In all other pair of letters, first and second letters are equidistant from the beginning and end in alphabetical series.
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