With four distinct coin denominations, the number of possible non-empty combinations is 2 to the power 4 minus 1, which equals 15 different achievable sums of money.
A person has 4 coins each of different denomination. What is the number of different sums of money the person can form (using one or more coins at a time)?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.