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Q. |
## You are given infinite coins of denominations 1, 3, 4. What is the minimum number of coins required to achieve a sum of 7? |

A. | 1 |

B. | 2 |

C. | 3 |

D. | 4 |

Answer» B. 2 | |

Explanation: a sum of 7 can be achieved by using a minimum of two coins {3,4}. |

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