Attributes of database?

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

(4, 152, 6)

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

(15, 315, 7)

What will be the resultant if the first digit of the lowest number is multiplied by the third digit of the highest number?

Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.

Select the number-pair in which the two numbers are related in the same way as are the two numbers of the following number-pair.

7 : 85

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

25:16::41:?

If 2 is subtracted from the second digits of each of the numbers, how many numbers thus formed will be divisible by three?