A.
Tricky Ratio Given the radius (r) of a circle you have to calculate the ratio between the circumference (C) of th... |

B.
Grid'y Rotations Consider an M×N grid of numbers and then a series of (r,c) pairs. Each (r,c) pair corresponds to a p... |

C.
Prime Factors Given an integer N, can you determine its prime factors? |

D.
Cash Change You have an unlimited number of cash notes of the following denominations: 1, 5, 10, 50, 100, 500. G... |

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