7.1. The average height of 11 football players on the team is 182 cm. During the match, the referee sent off one player, and the average height of the remaining players became 181 cm. What is the height of the player who was sent off?
Answer: 192 cm. Solution. Let $S$ be the sum that results from adding the heights of the 10 remaining football players. Then $\frac{S}{10}=181$ and $\frac{S+x}{11}=182$, where $x$ is the height of the removed football player. From this, $S=1810$ and $x=182 \cdot 11-S=2002-1810=192$.