Question 114
The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then, the sixth number is
Solution
Average of 9 numbers = 50
Hence sum of 9 numbers = 450
Average of last three numbers = 52
Hence sum of them will be = 156
Average of first five numbers is = 54
Hence sum of them will be = $$54\times5$$ = 270
So 6th number will be = sum of 9 numbers - (sum of first five numbers + sum of last three numbers)
= 450 - (156+270) = 24
Need AI Help?
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
