What is the average of the cubes of the first 7 natural numbers?

84 105 96 112

112

Formula used :- Sum of cubes of first n natural numbers = \(\frac{n(n+1)(n+1)}{2}\) Now , Sum of cubes of first 7 natural numbers = \(\frac{7(7+1)(7+1)}{2}\) = 784 Average = \(\frac{784}{7}\) = 112