# YOU CAN DOWNLOAD 200+ SUBJECTS PDF BOOK FOR COMPETITIVE EXAMINATIONS

## GCD and LCM using Recursion Multiple choice Questions and Answers (MCQs)

Question 6 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

In terms of Venn Diagram, which of the following expression gives LCM (Given A ꓵ B ≠ Ø)?

Multiplication of A U B terms | |

Multiplication of A ꓵ B terms | |

Multiplication of A*B terms | |

Multiplication of A-B terms |

Question 6 Explanation:

In terms of Venn Diagram, the LCM is given by the Union of two sets. So A U B gives the LCM. While A ꓵ B gives the GCD.

Question 7 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

What is the LCM according to the given Venn Diagram?

2 | |

3 | |

180 | |

6 |

Question 7 Explanation:

In terms of Venn Diagram, the LCM is given by the Union of two sets. So A U B gives the LCM. So product of all the terms is 180.

Question 8 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

What is the lcm (a, b)?

a + b | |

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

lcm (b, a) | |

a - b |

Question 8 Explanation:

Since the LCM function is commutative, so lcm (a, b) = lcm (b, a).

Question 9 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

What is the LCM of 48, 18, 6?

12 ^{2} | |

12*2 | |

3 | |

6 |

Question 9 Explanation:

The LCM of 48, 18, 6 is 144 and 12

^{2}is 144.Question 10 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

Is 9 and 28 coprime number.

True | |

False |

Question 10 Explanation:

Coprime numbers have GCD 1 and LCM is the product of the two given terms. So 9 and 28 are coprime numbers.

There are 10 questions to complete.