Blonde police

Another blonde walks into the police department looking for a job. The officer wants to
ask her a few questions...
Officer: What's 2+2?
Blonde: Hum... 4!
Officer: What's the square root of 100?
Blonde: Hum... 10!
Officer: Good! Now, who killed Abraham Lincoln?
Blonde: Hum... I don’t know.
Officer: OK thanks for coming. Well be in touch tomorrow.
The blonde goes home and calls up one of her friends, who asks her if she got the job.
The blonde says, excitedly, "Not only did I get the job, I'm already working on a murder
case!"