Question

A store sells 7 items. Maximum possible number of candidate 3-itemsets is
A. 15


B. 25


C. 35


D. 45

Answer 1

Answer:

I the right answer may be 45 because 45 is the max multiple of 3

Answer 2

Maximum possible number of three item sets from a store containing seven items is equal to 35.

• The maximum possible way of choosing r objects out of a total of n objects is equal to nCr.
• nCr is equal to n!/(r!(n-r)!).
• For choosing three objects from seven objects, maximum possible ways is equal to 7C3, the value of 7C3 is equal to 35.
• Hence, the maximum possible ways is equal to 35.