Select the option that is related to the third number in the same way as the second number is related to the first number.
5 : 30 :: 9 : ?
A81
B72
C65
D90

A81
B72
C65
D90
Related Questions:
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.
196 : 19 :: 361 : ? :: 529 : 28
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.
168 : 8 :: 84 : ? :: 105 : 5