Link to Practice Solutions
PART 1 - Classics
1. Classic (Wei-Hwa Huang) Answer: 132867459,471389562
Answer: 172369485,928541367
Answer: 631428975,418263597
Answer: 981257346,739512684
Answer: 291873564,759486123
Answer: 234617958,921876435
Answer: 843517269,385491726
Answer: 793425186,674518392
Answer: 298731645,764985213
Answer: 862547319,385491672
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PART 2 - Variations
1. Stair (Wei-Hwa Huang) Answer: 468327591,985432167
Answer: 694273158,354819267
Answer: 203610745,106724053
Answer: 947238651,732681945
Answer: 743695218,597462183
Answer: 173542896,418265937
Answer: 594386271,249857136
Answer: 463528917,931452768
Answer: 526137489,815673924
Answer: 174269385,563984271
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