When a is divided by b the remainder is 13.When c is…

When a is divided by b the remainder is 13.When c is divided by d the remainder is 12. If a,b,c,d are all positive integers then which of these may be the value of b*d?

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 #66001