Give stream of consciousness and then the final answer. The average of seven numbers is 18. The average of first three numbers is 12 and the average of last three numbers is 19. What is the middle number?\nOptions:\n(A) 25\n(B) 27\n(C) 29\n(D) 33\n(E) 34
User
The total of seven numbers = 7X18 = 126\nThe total of first 3 and last 3 numbers is = 3 X 12+3 X 19 = 99\nSo, the middle number is (126 - 93 ) = 33
The final answer: (D).
Assistant