P2.5

• P2.5.1 Pascal's triangle #2
• P2.5.2 The iterative weak acid approximation
• P2.5.3 The Luhn algorithm
• P2.5.4 Hero's method for computing a square root
• P2.5.5 Determining tomorrow's date
• P2.5.6 de Polignac's formula
• P2.5.7 The Hailstone Sequence
• P2.5.8 The Sieve of Eratosthenes
• P2.5.9 Euler's totient function
• P2.5.10 Monte Carlo approximation of $\pi$
• P2.5.11 Jumbling the letters in each word of a sentence
• P2.5.12 Electronic configurations