general math MCQ #984

The average of five results is 46 and that of the first four is 45. The fifth result is__________?

general math MCQ #984

Question 1
Q1. The average of five results is 46 and that of the first four is 45. The fifth result is__________?
- A) 1
- B) 10
- C) 12.5
- D) 50
Answer: 50
Explanation: Fifth result = 5×46 − 4×45 = 230 − 180 = 50.