Question

If three numbers between 0 and 1 are chosen at random, what will be the average value of the sum of their squares

Answer 1

is this question from sequence and series?

Answer 2

you mean if I chose for example: 0.78, 0. 203, 0.919, what would be average of the sum of their squares? like, (0.78^2 + 0.203^2 + 0.919^2) /3 = 0.4980566666666667