6.38 is the average of the three numbers.
The average of 0.3 and 3 and 30 is 11.1
12
36.5
17 plus 9 plus 6 plus 16 is a single number whose value is 38. The average of one number is itself.
1
The average is 50
100000 + 45000 + 15000 + 15000 + 15000 +10000 = 200000 Since there is only one number, the average is that number, namely 200000
76 & 2/3
30/3=10
36.9 + 36.4 + 37.4 + 36.3 is a single number = 147.0 The average of one number is itself, viz, 147
3037.5