+1982 Assume that n ≠ 0. Find the average of this set of numbers:
{n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, 9n}
A) 5
B) 5n
C) 5n^2
D) 44n/9
E) 44/9
+128407 Not as bad as it looks
Sum of values
_______________
Number of values
n ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 ) n (45)
________________________________ = _______ = 5n
9 9
Does this make sense ???
+1982 5n is correct. Add the 9 like terms to get 45n, then divide by 9 to get 5n.
