The mean of five numbers is 16. If four of the numbers are 10, 14, 18, and 20, what is the fifth number?

Tue, 05 May 2026 21:05:48 +0000

**The mean of five numbers is 16. If four of the numbers are 10, 14, 18, and 20, what is the fifth number?**
In a world increasingly driven by data-driven decisions, simple numerical puzzles like this resonate across US digital spaces—from classrooms to side-hustle operations. The question “The mean of five numbers is 16. If four of the numbers are 10, 14, 18, and 20, what is the fifth number?” taps into a growing curiosity about averages, pattern recognition, and problem-solving in everyday life. Though seemingly abstract, mastering such calculations supports critical thinking skills widely valued in education, finance, and informal mentoring environments across the United States. The mean of five numbers is 16.
To find the missing fifth number, leverage the definition of average: the sum of all values divided evenly across the total count. Here, 16 multiplied by 5 equals 80—the total sum expected. Adding the known values: 10 + 14 + 18 + 20 adds up to 62. Subtracting gives 80 − 62 = 18. Thus, the missing number is 18. This simple calculation reflects why average-based reasoning matters today. In personal finance, it helps track spending habits across numerous transactions. In education, it strengthens foundational math skills vital for STEM engagement. For professionals pursuing data literacy, recognizing how mean distinctions shape accurate interpretation is a gateway to deeper analytical confidence. In recent months, interest in basic statistics has risen as users seek clarity amid data overload. Whether users are reviewing grades, analyzing spending, or guiding students, understanding how averages work equips them with a practical tool used daily in analytics, budgeting, and performance evaluation. The question—though straightforward—embodies this broader trend: a demand for sharper, intuitive math literacy in mobile-first learning and professional contexts alike.