As, 13 + 7 = 20 ? 20 +7 = 27
Similarly, 18 + 7 = 25 ? 25 + 7 = 32
Except '14, 11 , 13', all remaining options having only even numbers.
In all others, middle number is the sum of other two numbers.
5-2=3, 19-16 =3,27 -23=4, 31-28=3.
Only 'option (d) second number is twice of first number.
Except option (d) difference of all other numbers are divisible by 2.
The Except 64-73 all are having difference of 11.
Except 210, all other are square of some numbers.
Except 28*, all others are multiples of 3.
In all other numbers, the sum of the first two digits is equal to the third digit.
Except 44, all are prime numbers.
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