 
 <translate> Q: The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?
Options:
(A) 9
(B) 8
(C) 7
(D) 6
(E) 2
A: (A) <ibo> Ajụjụ: Nkezi nchọpụta 9 bụ 9, nke nke mbụ n'ime 5 bụ 10 na nke ikpeazụ 5 bụ 8. Gịnị bụ ihe nke ise ọ chọpụtara? Nhọrọ: (A) 9 (B) 8 (C) 7 (D) 6 (E) 2 A: (A) 