Practicing Success
Practicing Success
CUET Preparation Today
If the average of 35 numbers is 22, the average of the first 17 numbers is 19, and the average of the last 17 numbers is 20, then the 18th number is: |
133 107 132 108 |
107 |
Sum of 35 number is = 35 × 22 = 770 Sum of first 17 numbers = 17 × 19 = 323 Sum of last 17 numbers = 17 × 20 = 340 18th number = 770 - ( 323 + 340 ) = 770 - 663 = 107 |
