The average of seven numbers is 18. The average of first three numbers is 14 and the average of last three numbers is 16. What is the middle number?\nOptions:\n(A) 27\n(B) 29\n(C) 36\n(D) 34\n(E) 35 Stream of consciousness first, then make a decision:
User
The total of seven numbers = 7X18 = 126\nThe total of first 3 and last 3 numbers is = 3 X 14+3 X 16 = 90\nSo, the middle number is (126 - 90 ) = 36
Thus, the answer is (C).
Assistant