Use reasoning to answer the following question.
The average of seven numbers is 20. The average of first three numbers is 14 and the average of last three numbers is 19. What is the middle number?\nOptions:\n(A) 27\n(B) 29\n(C) 31\n(D) 41\n(E) 35

(D)
The total of seven numbers = 7X20 = 140\nThe total of first 3 and last 3 numbers is = 3 X 14+3 X 19 = 99\nSo, the middle number is (140 - 99 ) = 41.

The answer is (D)