Home
Class 10
MATHS
15 friends meet at a marriage reception ...

15 friends meet at a marriage reception of their common friend. Every one of 15 friends shook hands with each other only once. Find the number of handshakes.

A

400

B

380

C

210

D

105

Text Solution

Verified by Experts

The correct Answer is:
D

Using the short cut, the number of hand shakes = `(15 xx 14)/(2) i.e. 105`
Promotional Banner

Topper's Solved these Questions

  • ARITHMETICAL REASONING TEST

    MCGROW HILL PUBLICATION|Exercise EXERCISE|25 Videos
  • ARITHMETIC PROGRESSION (A.P.)

    MCGROW HILL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|15 Videos
  • ASSIGNMENT - 4 (PROBLEMS ON RANKING TEST)

    MCGROW HILL PUBLICATION|Exercise MCQs|14 Videos
MCGROW HILL PUBLICATION-ARITHMETICAL REASONING TEST -EXERCISE
  1. In a chess tournament each of six players will play every other player...

    Text Solution

    |

  2. 15 friends meet at a marriage reception of their common friend. Every ...

    Text Solution

    |

  3. A shepherd had 17 sheep. All but nine died. How many was he left with?

    Text Solution

    |

  4. What is the smallest number of ducks that could swim in this formation...

    Text Solution

    |

  5. At the end of a business conference, ten people present all shake han...

    Text Solution

    |

  6. The number of girls in a class is one third of the number of boys. Whi...

    Text Solution

    |

  7. A group of 1200 persons consisting of captains and soldiers is travell...

    Text Solution

    |

  8. A bird shooter was asked how many birds he had in the bag. He replied ...

    Text Solution

    |

  9. A student got twice as many sums wrong as he got right. If he attempte...

    Text Solution

    |

  10. Aruna cut a cake into two halves and cut one half into smaller pieces ...

    Text Solution

    |

  11. A bus starts from city X. The number of women in the bus is half of th...

    Text Solution

    |

  12. In an examination, a student scores 4 marks for every correct answer a...

    Text Solution

    |

  13. A certain number of horses and an equal number of men are going som...

    Text Solution

    |

  14. Between two ends of a bookshelf in your study are displayed five of yo...

    Text Solution

    |

  15. A number of friends decided to go on a picnic and planned to spend Rs....

    Text Solution

    |

  16. A father tells his son, "I was of your present age when you were born....

    Text Solution

    |

  17. A father is, at present, three times as old as his son. Five years bac...

    Text Solution

    |

  18. In a farm, some keepers have 30 cows,50 hens and 23 goats. If total no...

    Text Solution

    |

  19. A is three times as old as B. C was twice as old as A four years befo...

    Text Solution

    |

  20. A woman says, "If you reverse my own age, the figures represent my hus...

    Text Solution

    |