Question 1102819
When Jorge took his place in the marching band, he noticed that he was 10th from the front, 7th from the back, 3rd from the left, and 8th from the right in a rectangular formation.
 How many people are in the marching band? 
:
Vertically: 10 + 7 = 17
Horizontally: 3 + 8 = 11
Therefore
  17 * 11 = 187 people in the band