Select the Venn diagram that best illustrates the relationship between the following classes.

Reptiles, Alligators, Animals

Select the word-pair that best represents a similar relationship to the one expressed in the pair of words given below.

Energy : Joule

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

(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

(4, 81, 5)

(3, 144, 9)

Select the set of classes the relationship among which is best illustrated by the Venn diagram given below.