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- Ellina has twelve blocks, two each of red (<math>\textbf{R}</math>), blue (<math>\ is even. Ellina arranges her blocks in a row in random order. The probability that her arra ...9 KB (1,520 words) - 18:06, 2 January 2023
- Ellina has twelve blocks, two each of red (<math>\textbf{R}</math>), blue (<math>\ is even. Ellina arranges her blocks in a row in random order. The probability that her arra ...5 KB (854 words) - 22:59, 30 June 2025
