Death Pact (also book 4):

Stupidity

ABHLOE:

Tree: WHAT DID YOU GET ON 21??

Pen: I picked C on 20, 21, 22, 23 and 24.

Tree: ..what-

Pen: I didn't study-

Tree: W-why would you-

Pen: The risk I took was calculated but BOY AM I FUCKED AT MATH.