AQuA-RAT train #75842 · Number Theory · Divisibility
The integer K is positive, but less than 400
The integer K is positive, but less than 400. If 21K is a multiple of 180, how many unique prime factors does K have?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #75842
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