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Q. |
## What is the GCD of a and b? |

A. | a + b |

B. | gcd (a-b, b) if a>b |

C. | gcd (a+b, a-b) |

D. | a – b |

Answer» B. gcd (a-b, b) if a>b | |

Explanation: as per euclid’s algorithm, gcd (a, b) = gcd (a-b, b) if a > b or gcd (a, b) = gcd (a, b-a) if b > a. |

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