Question

The average of 11 numbers is 50. If one number 65 is removed, the average of the remaining 10 numbers is:

• A. 48.5
• B. 50
• C. 46
• D. 55

Answer 1

The Correct Option is A

Step 1: Total of 11 numbers \(= 11\times50 = 550\).
Step 2: After removing 65: sum \(= 485\), average \(= \dfrac{485}{10} = 48.5\).

Quick Tip: Work with the total (average times count), adjust it, then divide by the new count.