- A8.2
- B7.2
- C6.4
- D8
Step-by-Step Solution
For two positive numbers , so . (The numbers are 16 and 4.) (8.2 averages AM and )
Answer: D) 8
Two positive numbers have an arithmetic mean of 10 and a harmonic mean of 6.4. What is their geometric mean?
Competition practiceStatistics
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Statistics practice questions
More Statistics practice
Marks of 50 students: 0 or more – 50, 10 or more – 46, 20 or more – 38, 30 or more – 24,…A company's sales grew by 20% in the first year and by 80% in the second. What was the…Classes 0–10, 10–30, 30–60 and 60–100 (unequal widths) have frequencies 5, 15, 12 and 8.…A family in Kochi spent on average ₹22,000 a month for the first 4 months of a year,…A grain trader spends ₹600 on wheat at ₹20 per kg, another ₹600 at ₹25 per kg and…