The average of 10 numbers is 15. If one number is excluded, the average becomes 14. What is the excluded number?
Q1. The average of 10 numbers is 15. If one number is excluded, the average becomes 14. What is the excluded number?
Answer: 24
Explanation: The sum of the 10 numbers is 10 * 15 = 150. After excluding one number, the sum of the remaining 9 numbers is 9 * 14 = 126. So, the excluded number is 150 - 126 = 24.