AQuA-RAT train #91468 · Combinatorics · Permutations & combinations
13 different biology books and 8 different chemistry books lie on a…
13 different biology books and 8 different chemistry books lie on a shelf. In how many ways can a student pick 2 books of each type?
This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #91468
Stuck? A gentle nudge
No hints for this one.
Your answer
Checked against the answer in AQuA-RAT.