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LCM and HCF

1. Find the HCF of 42 and 70. |

A. 10 |

B. 14 |

C. 18 |

D. 22 |

2. Find the LCM of 18, 24, 60 and 150. |

A. 100 |

B. 500 |

C. 1800 |

D. 2000 |

3. Find the HCF of 54/9, 60/17 and 36/51 |

A. 3/20 |

B. 5/22 |

C. 4/3 |

D. 6/17 |

4. The LCM of two numbers is 112 and of HCF is 4. If one number is 28 find out the next number. |

A. 10 |

B. 16 |

C. 18 |

D. 20 |

5. What is the greatest number which leaves the same number as remainder when it divides 52, 86 and 120. |

A. 24 |

B. 42 |

C. 34 |

D. None of these. |