AQuA-RAT train #2769 · Combinatorics · Permutations & combinations
A box contains 2 white balls, 3 black balls and 4 red…
A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #2769
Stuck? A gentle nudge
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