Answer:
Rebecca has 3 chances to swing at the ball, which creates different possible outcomes. Here are the possible series of swings that might happen on her 3 attempts:
1. Rebecca swings and hits the ball on her first attempt.
2. On her second attempt, she swings and misses.
3. On her third attempt, she swings and hits the ball.
OR
1. On her first attempt, Rebecca swings and misses.
2. On the second attempt, she swings and misses again.
3. On the third attempt, she swings and hits the ball.
OR
1. Rebecca swings and hits the ball on her first attempt.
2. On her second attempt, she swings and misses.
3. On the third attempt, she swings and misses.
OR
1. On her first attempt, Rebecca swings and misses.
2. On the second attempt, she swings and hits the ball.
3. On the third attempt, she swings and hits the ball.
These are four possible scenarios of swings that might happen during Rebecca's 3 attempts.