In a row of students P was standing 17th from the left end and 23rd from the right end. If Q was standing exactly in the middle of the row, what was his position from the left end? (Assume students were facing the north.)

20th 18th 22nd 19th

20th

1) Number of students= 22+ 16+ 01= 39 2) Q is in the middle of the row with 19 students on both sides of Q Thus, Q is at 20th position from the left