Select the option that is related to the third number in the same way as the second number is related to the first number.

39 : 27 :: 43 : ? 

Select the option in which the numbers are NOT related in the same way as are the numbers of the following set.

$(64, 91, 118)$

Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

16 : 8 :: 21 : ? :: 11 : 6

Select the option in which the numbers are related in the same way as are the numbers of the following set.

$(12, 14, 143)$

Select the option that is related to the fourth number in the same way as the first number is related to the second number and the fifth number is related to the sixth number.

12 : 136 :: ? : 188 :: 24 : 568

Select the option in which the numbers are related in the same way as are the numbers of the given set.

$221 : 348 : 517$

Select the option that is related to the fourth number in the same way as the first number is related to the second number and the fifth number is related to the sixth number.

1008 : 8 : : ? : 6 : : 220 : 4

Select the option that is related to the third number in the same way as the second number is related to the first number.

54 : 81 : : 6 : ?