Lemma
MediumPermutations & combinations
AQuA-RAT train #10418 · Combinatorics · Permutations & combinations

In a certain supermarket, a triangular display of cans is arranged in…

In a certain supermarket, a triangular display of cans is arranged in 10 rows, numbered 1 through 10 from top to bottom. Each successively numbered row contains 3 more cans than the row immediately above it. If there are fewer than 150 cans in the entire display, how many cans are in the sixth row?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #10418

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