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Originally Posted by
PhoenixRising 
Oh and she had forgotten about Josh and Iris; they too seemed fairly competent in Arithmancy knowledge. As evidenced by the fact that just after Evelyn answered, they both laid their bets on the same number. "Yes, the challenge number is correct! It is this number that presents what is you must face in order to reach the highest peak of your pinnacle cycle. Like the Pinnacles, there are four Challenge numbers as well, which cover the same years as your Pinnacles, but there is a difference in how we calculate them which is what makes this calculation a bit .... challenging. Can anyone tell me what I mean by this? That is to say, how do we calculate them? Generally speaking."
As Professor Hadley spoke about the correct type of calculation provided by some other students, Riley flipped to the chapter labeled, 'Challenge Numbers' and once she was finished he raised his hand to speak.
"Well professor it looks to me that you do the calculation about the same as the others except you switch the signs and instead of adding you subtract the two amounts you have. Which is a bit strange to me, what happens if you get a negative number?" he asked curiously.
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Originally Posted by
Roselyn Glancing over to Josh once he answered right after her, she stared smirked a little before just about to turn her attention back to the Professor. However, just as she did so, she saw Riley looking at her. Smiling back somewhat, the Slytherin started tapping her quill on her desk again. Smiling was fine. Right? 'Course it was. Pffft.
But, back to the lesson. "It's pretty much exactly how you calculate the pinnacles, what with the numbers you use, except you switch the two around and subtract them instead of adding them. Like, for the first number, instead of adding your month of birth with your day of birth, you subtract your day of birth from your month of birth." she said, right after raising her hand. At least, that's what was in the book.
Hmmm a smile. He wasn't asking for anything else, Evelyn and him were just friends. But a bit more to make hot-head Josh jealous would have been fun. He nodded back and then turned to face the front of the room again.