The average of 11 natural numbers is 53. The average of the first 6 natural numbers is 63. And, the average of the last 6 natural numbers is 47. Find the sixth number.
1
69
2
88
3
77
4
83
The average of 11 natural numbers is 53. The average of the first 6 natural numbers is 63. And, the average of the last 6 natural numbers is 47. Find the sixth number.