Ideas in this flowchart

• Membership in the power set of {peanut, butter, jelly}
• The set being tested is {peanut, jelly}.
• The reference set is {peanut, butter, jelly}.
• The answer is yes.
• {peanut, jelly} is one of the subsets of {peanut, butter, jelly}.
• A three-element set has eight subsets.
• The exercise asks for the other seven subsets.