Taylor sighed in resignation. "Can we go back to factorials?" she asked, her voice strained.
She wasn't understanding permutations at all. We were hitting a bit of a roadblock - while we hit it off well in our first week, all things considered, there was a factor in our arrangement we hadn't considered: I may have known the math, but I did not have the communication skills to teach them.
"Well, we have n and we have r, so we just need to take n factorial and divide it by n times r factorial," I explained, the solution clear to me.
Taylor stared at me. I didn't look her in the eye but I could feel it. I coughed nervously. "What's n in this circumstance?" I asked her.
Just staring. "What's n in a permutation?" I asked, trying to broaden the definition.
Still nothing. "The total. n is the set or population. So in this circumstance n is four, right?"
Taylor nodded. I knew she didn't get it.
"And it's asking about the top three in the race, so r, the subset or sample from the set is..." I waited for her. Nope. "...r is what number, Taylor?"
Just silence. "I am spoonfeeding you the answer here," I boldly complained.
"Don't be rude, I don't get it! You're the tutor, isn't that your job?" she finally snapped at me.
"There are two numbers I pointed out. One of them is n and one of them is r. I said that n is four, and the only other number is three and the only other variable is r. r is the only other number. So if n is four... r issss..."
"Three?"
"We have liftoff!" I almost shouted. "So, we then plug it into this formula. Good news, now it's just factorials. So now we do four factorial divided by four minus three factorial, which is one factorial, which is one, so the a-"
"When the fuck am I going to use this stuff after I graduate?!" Taylor complained to herself.
"Why'd you take this class, anyway?" I asked.
She shrugged. "I heard it was, like, the easiest math class, and I heard it really helps for a lot of different jobs."
It was my turn to shrug. "Okay."
"I think we can call it here today. I appreciate it, Quinn, I really do, but..." she trailed off. I simply stared at her in response. She looked at me for a few seconds before continuing. "I dunno. Like, it seems like I'm not understanding it, and you're just getting mad at me."
"I'm not getting mad, I just don't know any other way to explain it," I tried to explain myself.
"That sounds condescending," Taylor complained.
"Now it sounds like you're getting mad at me," I pointed out.
"I'm not - forget it. Let's just... try again next week, okay?"
"Okay," I conceded. We gathered our stuff and left the library, getting into her red convertible. Before long, we were on the road.
"So what do you want to do for your job, anyway?" Taylor attempted to make small talk while she drove.
"I don't know."
"Okay... do you have an idea? Like, are you going to college or something?"
"I sent out applications to MIT, Peterson and Boston University."
"Oh, what for?"
"Computer Science."
"Oh, wow! So you do have an idea what you want to do. I hear that there's a lot of, like, money involved in that."
"I guess."
Those were the last words we exchanged before we arrived at my place. Taylor thanked me for my time and quickly headed off.
***
Hey Quin. this is morgan, taylor's friend. could we meet for a sec afterschool today? I just need to talk real quick
I stared at my phone in confusion. How in the hell did Morgan even get my number...? What was this about?
Kevin lazily craned his head so he could look at my phone, still eating his roujiamo. I caught him staring and just asked, "What does this mean?"
"I'm no expert, but I think she wants to talk to you after school."
"Yeah, but what about?"
Kevin shrugged. "Either you're doing something really right or something really wrong," he said with his mouth full. "But hey, Morgan, huh? Nice."
"What?"
Kevin rolled his eyes and made a motion with his chest. "Morgan, dude," he replied, as if he had made his point fully.
I rolled my eyes in turn. "Okay."
"I'm serious, she's known around the school for it," he insisted. "Hold on." He waved across the cafeteria to some girl. "Hey, Robyn!"
Robyn was a girl Kevin knew. They'd been hanging out a bit, though Kevin insisted they weren't a thing. She had kind of a reputation around school for being a bit of a stuck-up brat, but she seemed to have good chemistry with Kevin. With a confused expression, she approached us.
"So," Kevin began, "got a weird question for you. What's like the one thing you'd say about Morgan that stands out?"
"Morgan Jones, from chem?" she asked hesitantly.
"Yeah, her. And like, not just to you. What's she, uh... known around the school for?"
"Why?" Robyn was as uncomfortable as I was.
"I'm trying to prove a point to Quinn here."
Robyn turned her face to me and smiled politely to say hi. I didn't really say anything, but that was the norm for me. "Um..." she began. "Well, she's a nice person-"
"Nah nah nah, that's just filler stuff. What do, like, people around the locker rooms say about her?"
Robyn sighed in disappointment. "Yeah, okay, her breasts are large. Was that what you called me over to say?"
Kevin smiled triumphantly towards me. I could feel myself blushing.